diff --git a/Makefile b/Makefile
index 0a305aa..28b2004 100644
--- a/Makefile
+++ b/Makefile
@@ -4,10 +4,11 @@ build-prod:
 	docker build ./ --tag "openslides-$(SERVICE)" --build-arg CONTEXT="prod" --target "prod"
 
 build-dev:
+	./make-localhost-cert.sh
 	docker build ./ --tag "openslides-$(SERVICE)-dev" --build-arg CONTEXT="dev" --target "dev"
 
 build-test:
 	docker build ./ --tag "openslides-$(SERVICE)-tests" --build-arg CONTEXT="tests" --target "tests"
 
 run-tests:
-	echo "Proxy has no tests"
\ No newline at end of file
+	echo "Proxy has no tests"