diff --git a/.github/workflows/compare_pr_to_master.v b/.github/workflows/compare_pr_to_master.v
index 8de3e9e4e3..f9f4b35757 100755
--- a/.github/workflows/compare_pr_to_master.v
+++ b/.github/workflows/compare_pr_to_master.v
@@ -12,7 +12,11 @@ fn gcommit() string {
 }
 
 fn r(cmd string) {
-	os.system(cmd)
+	res := os.system(cmd)
+	if res != 0 {
+		eprintln('> failed running: `${cmd}`')
+		exit(1)
+	}
 }
 
 fn xtime(cmd string) {