diff --git a/Makefile.am b/Makefile.am
index 60d33a3..fcf9df8 100644
--- Makefile.am
+++ Makefile.am
@@ -19,7 +19,7 @@ AM_LIBS    = -ldl
 endif
 
 if OS_MACOS
-AM_CFLAGS  =  -Wall -O3 -mssse3 -DGIT_REVISION=\"@VERSION@\"
+AM_CFLAGS  =  -Wall -O3 -DGIT_REVISION=\"@VERSION@\"
 AM_LDFLAGS =
 AM_LIBS    = -ldl
 endif