--- a/folly/portability/Asm.h
+++ b/folly/portability/Asm.h
@@ -38,7 +38,7 @@ inline void asm_volatile_pause() {
   ::_mm_pause();
 #elif defined(__i386__) || FOLLY_X64
   asm volatile("pause");
-#elif FOLLY_AARCH64 || defined(__arm__)
+#elif FOLLY_AARCH64 || (defined(__arm__) && !(__ARM_ARCH < 7))
   asm volatile("yield");
 #elif FOLLY_PPC64
   asm volatile("or 27,27,27");