diff --git a/libc/private/bionic_macros.h b/libc/private/bionic_macros.h
index 13934e5..54903f5 100644
--- a/libc/private/bionic_macros.h
+++ b/libc/private/bionic_macros.h
@@ -50,10 +50,7 @@
 }
 
 #if defined(__arm__)
-// Do not emit anything for arm, clang does not allow emiting an arm unwind
-// directive.
-// #define BIONIC_STOP_UNWIND asm volatile(".cantunwind")
-#define BIONIC_STOP_UNWIND
+#define BIONIC_STOP_UNWIND asm volatile(".cfi_undefined r14")
 #elif defined(__aarch64__)
 #define BIONIC_STOP_UNWIND asm volatile(".cfi_undefined x30")
 #elif defined(__i386__)