diff --git a/lib/glacier/string/str_format.cpp b/lib/glacier/string/str_format.cpp
index 8b9fef8..afdff66 100644
--- a/lib/glacier/string/str_format.cpp
+++ b/lib/glacier/string/str_format.cpp
@@ -70,11 +70,6 @@ void StrFormatValue(StringBuilder& builder, StringView value, StringView opts) {
   StrFormatInternal(builder, value);
 }
 
-template <>
-void StrFormatValue(StringBuilder& builder, String value, StringView opts) {
-  StrFormatInternal(builder, value);
-}
-
 void StrFormatInternal(StringBuilder& builder, StringView format) {
   // TODO: Consider throwing an error if there are unhandled format
   builder.PushBack(format);
diff --git a/lib/glacier/string/str_format.h b/lib/glacier/string/str_format.h
index 547d608..3f13ec4 100644
--- a/lib/glacier/string/str_format.h
+++ b/lib/glacier/string/str_format.h
@@ -37,9 +37,6 @@ void StrFormatValue(StringBuilder& builder, const char* value, StringView opts);
 template <>
 void StrFormatValue(StringBuilder& builder, StringView value, StringView opts);
 
-template <>
-void StrFormatValue(StringBuilder& builder, String value, StringView opts);
-
 void StrFormatInternal(StringBuilder& builder, StringView format);
 
 template <typename T, typename... Args>
diff --git a/lib/glacier/string/string.cpp b/lib/glacier/string/string.cpp
index c92aa9d..3e7cc16 100644
--- a/lib/glacier/string/string.cpp
+++ b/lib/glacier/string/string.cpp
@@ -46,5 +46,6 @@ char String::operator[](uint64_t offset) const {
 }
 
 String::operator StringView() const { return StringView(cstr_, length_); }
+StringView String::view() const { return this->operator StringView(); }
 
 }  // namespace glcr
diff --git a/lib/glacier/string/string.h b/lib/glacier/string/string.h
index e220395..a1c3d8f 100644
--- a/lib/glacier/string/string.h
+++ b/lib/glacier/string/string.h
@@ -13,13 +13,17 @@ class String {
   String(const char* cstr, uint64_t str_len);
   String(StringView str);
 
+  String(const String&) = delete;
+
   const char* cstr() const { return cstr_; }
   uint64_t length() const { return length_; }
 
   bool operator==(const String& str);
 
   char operator[](uint64_t offset) const;
+
   operator StringView() const;
+  StringView view() const;
 
  private:
   char* cstr_;
diff --git a/sys/denali/lib/denali/denali.yunq.h b/sys/denali/lib/denali/denali.yunq.h
index 03b1d0b..79d7322 100644
--- a/sys/denali/lib/denali/denali.yunq.h
+++ b/sys/denali/lib/denali/denali.yunq.h
@@ -17,11 +17,11 @@ class ReadRequest {
   void ParseFromBytes(const glcr::ByteBuffer&, uint64_t offset, const glcr::CapBuffer&);
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset) const;
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset, glcr::CapBuffer&) const; 
-  uint64_t device_id() const { return device_id_; }
+  const uint64_t& device_id() const { return device_id_; }
   void set_device_id(const uint64_t& value) { device_id_ = value; } 
-  uint64_t lba() const { return lba_; }
+  const uint64_t& lba() const { return lba_; }
   void set_lba(const uint64_t& value) { lba_ = value; } 
-  uint64_t size() const { return size_; }
+  const uint64_t& size() const { return size_; }
   void set_size(const uint64_t& value) { size_ = value; }
 
  private:
@@ -43,7 +43,7 @@ class ReadManyRequest {
   void ParseFromBytes(const glcr::ByteBuffer&, uint64_t offset, const glcr::CapBuffer&);
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset) const;
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset, glcr::CapBuffer&) const; 
-  uint64_t device_id() const { return device_id_; }
+  const uint64_t& device_id() const { return device_id_; }
   void set_device_id(const uint64_t& value) { device_id_ = value; }
   const glcr::Vector<uint64_t>& lba() const { return lba_; }
   void add_lba(const uint64_t& value) { lba_.PushBack(value); }
@@ -66,11 +66,11 @@ class ReadResponse {
   void ParseFromBytes(const glcr::ByteBuffer&, uint64_t offset, const glcr::CapBuffer&);
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset) const;
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset, glcr::CapBuffer&) const; 
-  uint64_t device_id() const { return device_id_; }
+  const uint64_t& device_id() const { return device_id_; }
   void set_device_id(const uint64_t& value) { device_id_ = value; } 
-  uint64_t size() const { return size_; }
+  const uint64_t& size() const { return size_; }
   void set_size(const uint64_t& value) { size_ = value; } 
-  z_cap_t memory() const { return memory_; }
+  const z_cap_t& memory() const { return memory_; }
   void set_memory(const z_cap_t& value) { memory_ = value; }
 
  private:
diff --git a/sys/victoriafalls/lib/victoriafalls/victoriafalls.yunq.h b/sys/victoriafalls/lib/victoriafalls/victoriafalls.yunq.h
index 7965670..baa88d1 100644
--- a/sys/victoriafalls/lib/victoriafalls/victoriafalls.yunq.h
+++ b/sys/victoriafalls/lib/victoriafalls/victoriafalls.yunq.h
@@ -17,7 +17,7 @@ class OpenFileRequest {
   void ParseFromBytes(const glcr::ByteBuffer&, uint64_t offset, const glcr::CapBuffer&);
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset) const;
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset, glcr::CapBuffer&) const; 
-  glcr::String path() const { return path_; }
+  const glcr::String& path() const { return path_; }
   void set_path(const glcr::String& value) { path_ = value; }
 
  private:
@@ -37,11 +37,11 @@ class OpenFileResponse {
   void ParseFromBytes(const glcr::ByteBuffer&, uint64_t offset, const glcr::CapBuffer&);
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset) const;
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset, glcr::CapBuffer&) const; 
-  glcr::String path() const { return path_; }
+  const glcr::String& path() const { return path_; }
   void set_path(const glcr::String& value) { path_ = value; } 
-  uint64_t size() const { return size_; }
+  const uint64_t& size() const { return size_; }
   void set_size(const uint64_t& value) { size_ = value; } 
-  z_cap_t memory() const { return memory_; }
+  const z_cap_t& memory() const { return memory_; }
   void set_memory(const z_cap_t& value) { memory_ = value; }
 
  private:
diff --git a/sys/yellowstone/lib/yellowstone/yellowstone.yunq.h b/sys/yellowstone/lib/yellowstone/yellowstone.yunq.h
index e094d7d..797240f 100644
--- a/sys/yellowstone/lib/yellowstone/yellowstone.yunq.h
+++ b/sys/yellowstone/lib/yellowstone/yellowstone.yunq.h
@@ -17,9 +17,9 @@ class RegisterEndpointRequest {
   void ParseFromBytes(const glcr::ByteBuffer&, uint64_t offset, const glcr::CapBuffer&);
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset) const;
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset, glcr::CapBuffer&) const; 
-  glcr::String endpoint_name() const { return endpoint_name_; }
+  const glcr::String& endpoint_name() const { return endpoint_name_; }
   void set_endpoint_name(const glcr::String& value) { endpoint_name_ = value; } 
-  z_cap_t endpoint_capability() const { return endpoint_capability_; }
+  const z_cap_t& endpoint_capability() const { return endpoint_capability_; }
   void set_endpoint_capability(const z_cap_t& value) { endpoint_capability_ = value; }
 
  private:
@@ -57,9 +57,9 @@ class AhciInfo {
   void ParseFromBytes(const glcr::ByteBuffer&, uint64_t offset, const glcr::CapBuffer&);
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset) const;
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset, glcr::CapBuffer&) const; 
-  z_cap_t ahci_region() const { return ahci_region_; }
+  const z_cap_t& ahci_region() const { return ahci_region_; }
   void set_ahci_region(const z_cap_t& value) { ahci_region_ = value; } 
-  uint64_t region_length() const { return region_length_; }
+  const uint64_t& region_length() const { return region_length_; }
   void set_region_length(const uint64_t& value) { region_length_ = value; }
 
  private:
@@ -80,29 +80,29 @@ class FramebufferInfo {
   void ParseFromBytes(const glcr::ByteBuffer&, uint64_t offset, const glcr::CapBuffer&);
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset) const;
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset, glcr::CapBuffer&) const; 
-  uint64_t address_phys() const { return address_phys_; }
+  const uint64_t& address_phys() const { return address_phys_; }
   void set_address_phys(const uint64_t& value) { address_phys_ = value; } 
-  uint64_t width() const { return width_; }
+  const uint64_t& width() const { return width_; }
   void set_width(const uint64_t& value) { width_ = value; } 
-  uint64_t height() const { return height_; }
+  const uint64_t& height() const { return height_; }
   void set_height(const uint64_t& value) { height_ = value; } 
-  uint64_t pitch() const { return pitch_; }
+  const uint64_t& pitch() const { return pitch_; }
   void set_pitch(const uint64_t& value) { pitch_ = value; } 
-  uint64_t bpp() const { return bpp_; }
+  const uint64_t& bpp() const { return bpp_; }
   void set_bpp(const uint64_t& value) { bpp_ = value; } 
-  uint64_t memory_model() const { return memory_model_; }
+  const uint64_t& memory_model() const { return memory_model_; }
   void set_memory_model(const uint64_t& value) { memory_model_ = value; } 
-  uint64_t red_mask_size() const { return red_mask_size_; }
+  const uint64_t& red_mask_size() const { return red_mask_size_; }
   void set_red_mask_size(const uint64_t& value) { red_mask_size_ = value; } 
-  uint64_t red_mask_shift() const { return red_mask_shift_; }
+  const uint64_t& red_mask_shift() const { return red_mask_shift_; }
   void set_red_mask_shift(const uint64_t& value) { red_mask_shift_ = value; } 
-  uint64_t green_mask_size() const { return green_mask_size_; }
+  const uint64_t& green_mask_size() const { return green_mask_size_; }
   void set_green_mask_size(const uint64_t& value) { green_mask_size_ = value; } 
-  uint64_t green_mask_shift() const { return green_mask_shift_; }
+  const uint64_t& green_mask_shift() const { return green_mask_shift_; }
   void set_green_mask_shift(const uint64_t& value) { green_mask_shift_ = value; } 
-  uint64_t blue_mask_size() const { return blue_mask_size_; }
+  const uint64_t& blue_mask_size() const { return blue_mask_size_; }
   void set_blue_mask_size(const uint64_t& value) { blue_mask_size_ = value; } 
-  uint64_t blue_mask_shift() const { return blue_mask_shift_; }
+  const uint64_t& blue_mask_shift() const { return blue_mask_shift_; }
   void set_blue_mask_shift(const uint64_t& value) { blue_mask_shift_ = value; }
 
  private:
@@ -133,11 +133,11 @@ class DenaliInfo {
   void ParseFromBytes(const glcr::ByteBuffer&, uint64_t offset, const glcr::CapBuffer&);
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset) const;
   uint64_t SerializeToBytes(glcr::ByteBuffer&, uint64_t offset, glcr::CapBuffer&) const; 
-  z_cap_t denali_endpoint() const { return denali_endpoint_; }
+  const z_cap_t& denali_endpoint() const { return denali_endpoint_; }
   void set_denali_endpoint(const z_cap_t& value) { denali_endpoint_ = value; } 
-  uint64_t device_id() const { return device_id_; }
+  const uint64_t& device_id() const { return device_id_; }
   void set_device_id(const uint64_t& value) { device_id_ = value; } 
-  uint64_t lba_offset() const { return lba_offset_; }
+  const uint64_t& lba_offset() const { return lba_offset_; }
   void set_lba_offset(const uint64_t& value) { lba_offset_ = value; }
 
  private:
diff --git a/sys/yellowstone/yellowstone_server.cpp b/sys/yellowstone/yellowstone_server.cpp
index 5ae938e..978e4fd 100644
--- a/sys/yellowstone/yellowstone_server.cpp
+++ b/sys/yellowstone/yellowstone_server.cpp
@@ -92,7 +92,7 @@ glcr::ErrorCode YellowstoneServer::HandleGetDenali(const Empty&,
 
 glcr::ErrorCode YellowstoneServer::HandleRegisterEndpoint(
     const RegisterEndpointRequest& req, Empty&) {
-  dbgln("Registering {}.", req.endpoint_name());
+  dbgln("Registering {}.", req.endpoint_name().view());
   if (req.endpoint_name() == "denali") {
     // FIXME: Rather than blocking and calling the denali service
     // immediately we should signal the main thread that it can continue init.
diff --git a/yunq/message.h.jinja b/yunq/message.h.jinja
index 93a29fc..e64c0ee 100644
--- a/yunq/message.h.jinja
+++ b/yunq/message.h.jinja
@@ -23,7 +23,7 @@ class {{message.name}} {
 
 {%- for field in message.fields %}
   {%- if not field.repeated %} 
-  {{field.cpp_type()}} {{field.name}}() const { return {{field.name}}_; }
+  const {{field.cpp_type()}}& {{field.name}}() const { return {{field.name}}_; }
   void set_{{field.name}}(const {{field.cpp_type()}}& value) { {{field.name}}_ = value; }
   {%- else %}
   const glcr::Vector<{{field.cpp_type()}}>& {{field.name}}() const { return {{field.name}}_; }
diff --git a/zion/loader/init_loader.cpp b/zion/loader/init_loader.cpp
index cb95b85..5a7fa3e 100644
--- a/zion/loader/init_loader.cpp
+++ b/zion/loader/init_loader.cpp
@@ -107,7 +107,7 @@ void DumpModules() {
 #endif
 }
 
-const limine_file& GetInitProgram(glcr::String path) {
+const limine_file& GetInitProgram(const glcr::String& path) {
   const limine_module_response& resp = boot::GetModules();
   for (uint64_t i = 0; i < resp.module_count; i++) {
     const limine_file& file = *resp.modules[i];
@@ -115,7 +115,7 @@ const limine_file& GetInitProgram(glcr::String path) {
       return file;
     }
   }
-  panic("Program not found: {}", path);
+  panic("Program not found: {}", path.view());
   UNREACHABLE
 }