diff --git a/deploy.sh b/deploy.sh
index 56ed63a..3c741d1 100755
--- a/deploy.sh
+++ b/deploy.sh
@@ -7,7 +7,7 @@ export PATH=$PATH:$HOME/.local/bin;
 # Build and push Docker image to Docker Hub
 echo "$DOCKER_TOKEN" | docker login -u "$DOCKER_USERNAME" --password-stdin;
 docker build \
-  --build-arg APP_ENVIRONMENT="${APP_ENVIRONMENT}" \
+  --build-arg APP_ENVIRONMENT="$APP_ENVIRONMENT" \
   --no-cache -t sartography/cr-connect-bpmn:latest . \
   || exit 1;
 docker push sartography/cr-connect-bpmn:latest || exit 1;