diff --git a/Makefile b/Makefile
index 5a55200..a8d23d2 100644
--- a/Makefile
+++ b/Makefile
@@ -23,7 +23,7 @@ checker-carddav.so:
 	go build -buildmode=plugin -ldflags "$(GO_LDFLAGS)" -o $@ ./plugin/carddav
 
 test:
-	go test ./...
+	go test -tags standalone ./...
 
 docker: docker-caldav docker-carddav