diff --git a/docker/Dockerfile b/docker/Dockerfile
index 58ab0e9c..9d5e95df 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -3,7 +3,7 @@
 # SPDX-FileCopyrightText: Huawei Inc.
 #
 FROM nginx:1.25.1-alpine
-LABEL org.opencontainers.image.source=https://github.com/eclipse-xpanse/xpanse-ui"
+LABEL org.opencontainers.image.source="https://github.com/eclipse-xpanse/xpanse-ui"
 LABEL org.opencontainers.image.description="Xpanse UI Container"
 WORKDIR /usr/share/nginx/html
 RUN apk add --no-cache bash