diff --git a/scripts/docker/build b/scripts/docker/build
index f9bb3c27..8331532e 100755
--- a/scripts/docker/build
+++ b/scripts/docker/build
@@ -4,7 +4,7 @@ set -e
 echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin
 
 # If a tag exists, build both that tag and stable
-if [[ -z $TRAVIS_TAG ]]; then
+if [[ ! -z $TRAVIS_TAG ]]; then
   docker build --build-arg VERSION=${TRAVIS_TAG#?} -t shlinkio/shlink-web-client:${TRAVIS_TAG#?} -t shlinkio/shlink-web-client:stable .
   docker push shlinkio/shlink-web-client:${TRAVIS_TAG#?}
   docker push shlinkio/shlink-web-client:stable