diff --git a/app-version.sh b/app-version.sh
index 4bcc143..bbe7490 100755
--- a/app-version.sh
+++ b/app-version.sh
@@ -35,7 +35,7 @@ label+='.version=${'
 label+="${version_lookup}"
 label+='}-${'
 label+="${digest_lookup}"
-label+='}'
+label+='}"'
 
 echo
 echo "--- And don't forget to label the actual service in the compose file ---"