diff --git a/make-mac.mk b/make-mac.mk
index 35f8c9b73..559ef2be6 100644
--- a/make-mac.mk
+++ b/make-mac.mk
@@ -23,7 +23,7 @@ endif
 #DEFS+=-DZT_TRACE -DZT_LOG_STDOUT 
 
 # Uncomment for a release optimized universal binary build
-CFLAGS=-arch i386 -arch x86_64 -Wall -O3 -flto -fvectorize -fstack-protector -pthread -mmacosx-version-min=10.6 -DNDEBUG -Wno-unused-private-field $(INCLUDES) $(DEFS)
+CFLAGS=-arch i386 -arch x86_64 -Wall -O3 -flto -fPIE -fvectorize -fstack-protector -pthread -mmacosx-version-min=10.6 -DNDEBUG -Wno-unused-private-field $(INCLUDES) $(DEFS)
 STRIP=strip
 
 # Uncomment for a debug build