diff --git a/BBDown/BBDownUtil.cs b/BBDown/BBDownUtil.cs
index 74b7e4b35..ede2193f4 100644
--- a/BBDown/BBDownUtil.cs
+++ b/BBDown/BBDownUtil.cs
@@ -838,7 +838,7 @@ public static async Task<bool> CheckLogin(string cookie)
         private static partial Regex McdnRegex();
         [GeneratedRegex("(^|&)?(\\w+)=([^&]+)(&|$)?", RegexOptions.Compiled)]
         private static partial Regex QueryRegex();
-        [GeneratedRegex("libavutil\\s+(\\d+)\\. (\\d+)\\.")]
+        [GeneratedRegex("libavutil\\s+(\\d+)\\. +(\\d+)\\.")]
         private static partial Regex LibavutilRegex();
     }
 }