diff --git a/shadowsocks-csharp/Controller/Service/AvailabilityStatistics.cs b/shadowsocks-csharp/Controller/Service/AvailabilityStatistics.cs
index 49820f63..9ed89a49 100644
--- a/shadowsocks-csharp/Controller/Service/AvailabilityStatistics.cs
+++ b/shadowsocks-csharp/Controller/Service/AvailabilityStatistics.cs
@@ -102,7 +102,7 @@ namespace Shadowsocks.Controller
             {
                 jsonString = await new HttpClient().GetStringAsync(API);
             }
-            catch (HttpRequestException e)
+            catch (Exception e)
             {
                 Logging.LogUsefulException(e);
                 return null;