diff --git a/macosx/Makefile b/macosx/Makefile
index 9c50a1f02..4e5e79e11 100644
--- a/macosx/Makefile
+++ b/macosx/Makefile
@@ -71,11 +71,14 @@ $(IMAGE_NAME): $(IMAGE_STAGING_DIR)/$(PKG_NAME)
 	rm -f $@
 	hdiutil create -imagekey zlib-level=9 -srcfolder $(IMAGE_STAGING_DIR) $@
 
-$(IMAGE_STAGING_DIR)/$(PKG_NAME): stage-nmap stage-ncat stage-ndiff stage-zenmap stage-nping stage-nmap-update COPYING.formatted
+$(IMAGE_STAGING_DIR)/$(PKG_NAME): check-nmap check-ncat check-ndiff check-zenmap check-nping check-nmap-update COPYING.formatted
 	mkdir -p $(IMAGE_STAGING_DIR)
 	cp -rf $(EXTRA_DIST) $(IMAGE_STAGING_DIR)/
 	$(PACKAGEMAKER) --doc nmap.pmdoc --title "Nmap $(NMAP_VERSION)" --no-relocate -o $@
 
+check-%: stage-%
+	find $* -perm -a+x -type f | xargs otool -L | grep "$(MACPORTS_PREFIX)" && false || echo "Libs are clean"
+
 export-%:
 	rm -rf $*
 # Using @BASE discards local changes.