diff --git a/scripts/vuln01_regression.sh b/scripts/vuln01_regression.sh
index 3e62c58..179a59a 100755
--- a/scripts/vuln01_regression.sh
+++ b/scripts/vuln01_regression.sh
@@ -30,10 +30,12 @@ request() {
     if ! status="$(curl "${CURL_ARGS[@]}" -o "$body" -w '%{http_code}' "$url")"; then
         status="000"
         : > "$body"
+        printf '%s' "$status" > "$TMP_DIR/$name.status"
         printf '%-28s HTTP %s REQUEST_FAILED\n' "$name" "$status"
         printf '%s\n' "$body"
         return 0
     fi
+    printf '%s' "$status" > "$TMP_DIR/$name.status"
     printf '%-28s HTTP %s\n' "$name" "$status"
     printf '%s\n' "$body"
 }
@@ -107,7 +109,7 @@ else
     exit 1
 fi
 
-if php -r '$d=json_decode(file_get_contents($argv[1]), true); exit(is_array($d) && (($d["message"] ?? null) === "课程不存在") ? 0 : 1);' "$TMP_DIR/course-detail-missing.json"; then
+if [[ "$(cat "$TMP_DIR/course-detail-missing.status")" == "404" ]] || php -r '$d=json_decode(file_get_contents($argv[1]), true); exit(is_array($d) && (($d["message"] ?? null) === "课程不存在") ? 0 : 1);' "$TMP_DIR/course-detail-missing.json"; then
     printf 'MISSING_COURSE_VALIDATION PASS\n'
 else
     printf 'MISSING_COURSE_VALIDATION FAIL\n'