diff --git a/Makefile.rules b/Makefile.rules
index 351a3450601..88295f2e2d5 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -434,8 +434,8 @@ ifeq ($(OS),Darwin)
   DARWIN_VERSION := $(shell echo $(DARWIN_VERSION)| sed -E 's/(10.[0-9]).*/\1/')
   # Get "4" out of 10.4 for later pieces in the makefile.
   DARWIN_MAJVERS := $(shell echo $(DARWIN_VERSION)| sed -E 's/10.([0-9]).*/\1/')
-     
-  SharedLinkOptions=-Wl,-flat_namespace -Wl,-undefined -Wl,suppress -bundle \
+
+  SharedLinkOptions=-Wl,-flat_namespace -Wl,-undefined -Wl,suppress -dylib \
                     -mmacosx-version-min=$(DARWIN_VERSION)
   CompileCommonOpts += -mmacosx-version-min=$(DARWIN_VERSION)
 else