diff --git a/lib/mammoth/src/thread.cpp b/lib/mammoth/src/thread.cpp
index 909df3e..c0a38b3 100644
--- a/lib/mammoth/src/thread.cpp
+++ b/lib/mammoth/src/thread.cpp
@@ -1,7 +1,9 @@
-#include "include/mammoth/thread.h"
+#include "mammoth/thread.h"
 
 #include <zcall.h>
 
+#include "mammoth/debug.h"
+
 namespace {
 
 extern "C" void thread_entry(Thread::Entry entry, void* arg1) {
@@ -13,7 +15,8 @@ extern "C" void thread_entry(Thread::Entry entry, void* arg1) {
 }  // namespace
 
 Thread::Thread(Entry e, const void* arg1) {
-  ZThreadCreate(Z_INIT_PROC_SELF, &thread_cap_);
-  ZThreadStart(thread_cap_, reinterpret_cast<uint64_t>(thread_entry),
-               reinterpret_cast<uint64_t>(e), reinterpret_cast<uint64_t>(arg1));
+  check(ZThreadCreate(Z_INIT_PROC_SELF, &thread_cap_));
+  check(ZThreadStart(thread_cap_, reinterpret_cast<uint64_t>(thread_entry),
+                     reinterpret_cast<uint64_t>(e),
+                     reinterpret_cast<uint64_t>(arg1)));
 }