diff --git a/newlib/libc/posix/posix_spawn.c b/newlib/libc/posix/posix_spawn.c
index 85bfa6477..fe912a8b7 100644
--- a/newlib/libc/posix/posix_spawn.c
+++ b/newlib/libc/posix/posix_spawn.c
@@ -146,6 +146,17 @@ typedef struct __posix_spawn_file_actions_entry {
  * Spawn routines
  */
 
+#if defined (__CYGWIN__) && defined (__i386__)
+extern int getgid32 (void);
+extern int getuid32 (void);
+extern int setegid32 (gid_t egid);
+extern int seteuid32 (uid_t euid);
+#define setegid setegid32
+#define seteuid seteuid32
+#define getgid getgid32
+#define getuid getuid32
+#endif
+
 static int
 process_spawnattr(const posix_spawnattr_t sa)
 {
diff --git a/winsup/cygwin/release/3.3.4 b/winsup/cygwin/release/3.3.4
index 1982df0cf..7c37a575c 100644
--- a/winsup/cygwin/release/3.3.4
+++ b/winsup/cygwin/release/3.3.4
@@ -20,3 +20,6 @@ Bug Fixes
 
 - Ignore INHERIT ACEs when reading the DACL of non-directory files.
   Addresses: https://cygwin.com/pipermail/cygwin/2022-January/250363.html
+
+- Fix an "Invalid argument" problem in posix_spawn on i686.
+  Addresses: https://cygwin.com/pipermail/cygwin/2022-January/250453.html