diff --git a/src/Jackett/Controllers/AdminController.cs b/src/Jackett/Controllers/AdminController.cs
index 020b8cfb0..eab4b2e47 100644
--- a/src/Jackett/Controllers/AdminController.cs
+++ b/src/Jackett/Controllers/AdminController.cs
@@ -273,11 +273,14 @@ namespace Jackett.Controllers
             }
             catch (Exception ex)
             {
+                var msg = ex.Message;
+                if (ex.InnerException != null)
+                    msg += ": " + ex.InnerException.Message;
                 logger.Error(ex, "Exception in test_indexer");
                 jsonReply["result"] = "error";
-                jsonReply["error"] = ex.Message;
+                jsonReply["error"] = msg;
                 if (indexer != null)
-                    indexer.LastError = ex.Message;
+                    indexer.LastError = msg;
             }
             return Json(jsonReply);
         }