diff --git a/.github/workflows/python-app-pr.yml b/.github/workflows/python-app-pr.yml
index 37d279d..a97d57b 100644
--- a/.github/workflows/python-app-pr.yml
+++ b/.github/workflows/python-app-pr.yml
@@ -46,9 +46,11 @@ jobs:
       run: |
         echo "test_dev=$(tail -2 output-dev.txt | head -1)" >> "$GITHUB_ENV"
         echo "test_pr=$(tail -2 output-pr.txt | head -1)" >> "$GITHUB_ENV"
-        echo 'test_results<<EOF'
-        diff -u output-dev.txt output-pr.txt
-        echo EOF
+        {
+          echo "test_results<<EOF"
+          diff -u output-dev.txt output-pr.txt
+          echo EOF
+        }
     
     - name: Setup Node (for diff)
       uses: actions/setup-node@v4