diff --git a/Makefile.am b/Makefile.am
index 6c7d2d3f..ff0de9f8 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -30,7 +30,7 @@ AM_CFLAGS += -Wundef -Wbad-function-cast -Winline -Wcast-align
 AM_CFLAGS += -Wdeclaration-after-statement -Wno-pointer-sign -Wno-attributes
 AM_CFLAGS += -Wno-unused-result -Wno-format-y2k
 if IS_DARWIN
-AM_CFLAGS += -Wno-deprecated-declarations -Wno-cast-align
+AM_CFLAGS += -Wno-deprecated-declarations -Wno-cast-align -Wno-macro-redefined
 endif
 AM_CPPFLAGS += -DDEBUG
 endif