diff --git a/common.gypi b/common.gypi
index c3462821..67291fdc 100644
--- a/common.gypi
+++ b/common.gypi
@@ -36,6 +36,7 @@
         },
         'xcode_settings': {
           'GCC_OPTIMIZATION_LEVEL': '0',
+          'OTHER_CFLAGS': [ '-Wno-strict-aliasing' ],
         },
         'conditions': [
           ['OS != "win"', {