diff --git a/Makefile b/Makefile
index 517060738..388beca74 100644
--- a/Makefile
+++ b/Makefile
@@ -46,7 +46,11 @@ frontend-%: node_modules
 
 .PHONY: --frontend-test
 --frontend-test: karma.conf.js
-	npx -- karma start --conf karma.conf.js
+	npx -- karma start --conf karma.conf.js $(WATCH)
+
+.PHONY: --frontend-test-watch
+--frontend-test-watch: WATCH=--single-run false
+--frontend-test-watch: --frontend-test
 
 node_modules: .npmrc package.json
 	npm ci --cache .npm --prefer-offline