diff --git a/action.yml b/action.yml
index 3d4a9d4..c70bc8e 100644
--- a/action.yml
+++ b/action.yml
@@ -77,8 +77,15 @@ runs:
         JOB_NAME: ${{ inputs.job-name }}
         PRIVATE_REPO: ${{ inputs.private-repo-workaround }}
       run: |
+        . "${GITHUB_ACTION_PATH}/utils.sh"
+
         if "$GITHUB_ACTION_PATH/retrieve-old-report.sh" && [ -f old-report.json ]; then
-           log "Reporting on sizes and comparing to sizes in $HEAD_BRANCH"
+          log "Reporting on sizes and comparing to sizes in $HEAD_BRANCH"
+
+          group 'Old report data'
+          cat old-report.json
+          endgroup
+
           "$GITHUB_ACTION_PATH/comment_on_pr.sh" report.json old-report.json
         else
           log 'Reporting on sizes'