diff --git a/libcutils/atomic-android-arm.S b/libcutils/atomic-android-arm.S
index 1dd2363..4d98451 100644
--- a/libcutils/atomic-android-arm.S
+++ b/libcutils/atomic-android-arm.S
@@ -237,7 +237,7 @@
 
 /* replaced swp instruction with ldrex/strex for ARMv6 & ARMv7 */
 android_atomic_swap:
-#if defined (_ARM_HAVE_LDREX_STREX)
+#if defined (__ARM_HAVE_LDREX_STREX)
 1:  ldrex   r2, [r1]
     strex   r3, r0, [r1]
     teq     r3, #0