diff --git a/.github/workflows/pr.automerge.yml b/.github/workflows/pr.automerge.yml
index b8a042dfc..bdbeb5963 100644
--- a/.github/workflows/pr.automerge.yml
+++ b/.github/workflows/pr.automerge.yml
@@ -70,7 +70,7 @@ jobs:
         run: |
           echo '## Diff Output' >> $GITHUB_STEP_SUMMARY
           echo '```diff' >> $GITHUB_STEP_SUMMARY
-          head -200 <.diff >> $GITHUB_STEP_SUMMARY
+          head -100 <.diff >> $GITHUB_STEP_SUMMARY
           echo '```' >> $GITHUB_STEP_SUMMARY
           exit 1