diff --git a/Dockerfile b/Dockerfile
index bbd07f4..160793c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,9 +16,9 @@ ARG CANAL stable
 ENV CNL_DOTCLEAR=$CANAL
 
 # Image label
-LABEL org.opencontainers.image.source https://github.com/JcDenis/docker-dotclear
-LABEL org.opencontainers.image.description "Dotclear docker image $CNL_DOTCLEAR"
-LABEL org.opencontainers.image.licenses AGPL-3.0
+LABEL org.opencontainers.image.source=https://github.com/JcDenis/docker-dotclear
+LABEL org.opencontainers.image.description="Dotclear docker image $CNL_DOTCLEAR"
+LABEL org.opencontainers.image.licenses=AGPL-3.0
 
 ##
 # Nginx