diff --git a/libc/kernel/arch-x86/asm/cmpxchg.h b/libc/kernel/arch-x86/asm/cmpxchg.h
index 0379a49..9447850 100644
--- a/libc/kernel/arch-x86/asm/cmpxchg.h
+++ b/libc/kernel/arch-x86/asm/cmpxchg.h
@@ -16,4 +16,4 @@
  ***
  ****************************************************************************
  ****************************************************************************/
-#include "cmpxchg_64.h"
+#include "cmpxchg_32.h"