diff --git a/util/compare_gnu_result.py b/util/compare_gnu_result.py
index 0c5e83c88..cfd33ea4c 100755
--- a/util/compare_gnu_result.py
+++ b/util/compare_gnu_result.py
@@ -29,4 +29,7 @@ print(
 
 # If results are worse fail the job to draw attention
 if pass_d < 0:
+    print(
+        f"::error ::PASS count is reduced from main: PASS {pass_d:+d} "
+    )
     sys.exit(1)