diff --git a/.github/workflows/MLPipelinePullRequest.yml b/.github/workflows/MLPipelinePullRequest.yml
index 170fc66..3cf830b 100644
--- a/.github/workflows/MLPipelinePullRequest.yml
+++ b/.github/workflows/MLPipelinePullRequest.yml
@@ -89,13 +89,14 @@ jobs:
         AWS_ACCESS_KEY_ID: ${{ secrets.ROBOT_AWS_ACCESS_KEY_ID }}
         AWS_SECRET_ACCESS_KEY: ${{ secrets.ROBOT_AWS_SECRET_ACCESS_KEY }}
         REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        TARGET_BRANCH: ${{ github.base_ref }}
       run: |
         cd modules/ml-pipeline/src/pipeline
         echo "## Model metrics" > report.md
 
         # Compare metrics to master
-        git fetch --depth=1 origin master:master
-        dvc metrics diff --md --all master >> report.md
+        git fetch --depth=1 origin ${TARGET_BRANCH}:${TARGET_BRANCH}
+        dvc metrics diff --md --all ${TARGET_BRANCH} >> report.md
 
         cml comment create report.md