diff --git a/.github/not-on-master.sh b/.github/not-on-master.sh
index fc9ccc8fc0..b2bd8536de 100755
--- a/.github/not-on-master.sh
+++ b/.github/not-on-master.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [ "${GITHUB_REF}" == "master" ]; then
+if [ "${GITHUB_REF_NAME}" == "master" ]; then
   echo "Skipping this step on master..."
 else
   exec "$@"
diff --git a/.github/workflows/build_test_deploy.yml b/.github/workflows/build_test_deploy.yml
index 5176540efa..b7be8e1923 100644
--- a/.github/workflows/build_test_deploy.yml
+++ b/.github/workflows/build_test_deploy.yml
@@ -128,7 +128,7 @@ jobs:
       
       - name: Build webknossos (sbt)
         run: |
-          if [ "${{ github.ref }}" == "refs/heads/master" ]; then
+          if [ "${{ github.ref_name }}" == "master" ]; then
             sbt -no-colors clean compile stage
           else
             sbt -no-colors -DfailOnWarning compile stage