diff --git a/osx/Makefile b/osx/Makefile
index 2bd414ffa4..6771308fbd 100644
--- a/osx/Makefile
+++ b/osx/Makefile
@@ -9,9 +9,8 @@ dockerbuild: clean
 	docker run --name "$(DOCKER_CONTAINER)" "$(DOCKER_IMAGE)"
 	docker cp "$(DOCKER_CONTAINER)":/DockerToolbox.pkg .
 	docker rm "$(DOCKER_CONTAINER)" 2>/dev/null || true
-	mv DockerToolbox.pkg DockerToolboxUnsigned.pkg
-	productsign --sign "3rd Party Mac Developer Installer: Docker Inc" DockerToolboxUnsigned.pkg DockerToolbox.pkg
-	rm DockerToolboxUnsigned.pkg
+	productsign --sign "3rd Party Mac Developer Installer: Docker Inc" DockerToolbox.pkg DockerToolboxSigned.pkg || true
+	mv DockerToolboxSigned.pkg DockerToolbox.pkg || true
 
 clean:
 	rm -f DockerToolbox.pkg