diff --git a/libunwind/src/assembly.h b/libunwind/src/assembly.h
--- a/libunwind/src/assembly.h
+++ b/libunwind/src/assembly.h
@@ -15,7 +15,7 @@
 #ifndef UNWIND_ASSEMBLY_H
 #define UNWIND_ASSEMBLY_H
 
-#if (defined(__i386__) || defined(__x86_64__)) && defined(__linux__)
+#if defined(__linux__) && defined(__CET__)
 #include <cet.h>
 #define _LIBUNWIND_CET_ENDBR _CET_ENDBR
 #else