diff --git a/ci-scripts/report-size.sh b/ci-scripts/report-size.sh
index 889cd84..0c9d038 100755
--- a/ci-scripts/report-size.sh
+++ b/ci-scripts/report-size.sh
@@ -72,10 +72,10 @@ if [ "${CI-false}" = "true" ]; then
 	pr_number=$(curl -X 'GET' \
 		"$GITHUB_API_URL/repos/$GITHUB_REPOSITORY/pulls?state=open&sort=recentupdate" \
 		-H 'accept: application/json' |
-		jq --arg head_ref "$GITHUB_HEAD_REF" '.[] | select(.head.ref == $head_ref) | .number')
+		jq --arg head_ref "$GITHUB_REF_NAME" '.[] | select(.head.ref == $head_ref) | .number')
 
 	if [ -z "$pr_number" ]; then
-		echo "No PR created for this pull request"
+		echo "No PR created for this commit"
 		exit 0
 	fi