diff --git a/.github/workflows/pr-linter.yml b/.github/workflows/pr-linter.yml
index 52d08c5a7d7..cbffd76f61f 100644
--- a/.github/workflows/pr-linter.yml
+++ b/.github/workflows/pr-linter.yml
@@ -100,6 +100,6 @@ jobs:
       - name: Build oneDNN
         run: |
             .github/automation/build_linters.sh | tee build.log
-            grep -q "warning" build.log && exit 1 || true
+            grep -i "warning:" build.log | sort -u && exit 1 || true
         env:
           ONEDNN_ACTION: build