diff --git a/src/halfvec.h b/src/halfvec.h
index a15f077..fd9470d 100644
--- a/src/halfvec.h
+++ b/src/halfvec.h
@@ -24,7 +24,7 @@
 #endif
 
 /* Needed for cross-compiling / universal binaries on Mac */
-#if defined(USE_DISPATCH) && (defined(HAVE__GET_CPUID) || defined(__APPLE_CC__))
+#if defined(USE_DISPATCH) && (defined(HAVE__GET_CPUID) || defined(__apple_build_version__))
 #define USE__GET_CPUID
 #endif