diff --git a/src/Jackett.Common/Indexers/Definitions/CardigannIndexer.cs b/src/Jackett.Common/Indexers/Definitions/CardigannIndexer.cs
index 9b87a9ffa..6c985fe1e 100644
--- a/src/Jackett.Common/Indexers/Definitions/CardigannIndexer.cs
+++ b/src/Jackett.Common/Indexers/Definitions/CardigannIndexer.cs
@@ -751,6 +751,10 @@ namespace Jackett.Common.Indexers.Definitions
                             }
                             pairs[input] = CaptchaText.Value;
                         }
+                        else
+                        {
+                            throw new ExceptionWithConfigData("Login failed: No captcha provided", configData);
+                        }
                     }
                     if (Captcha.Type == "text")
                     {
@@ -767,6 +771,10 @@ namespace Jackett.Common.Indexers.Definitions
                             }
                             pairs[input] = CaptchaAnswer.Value;
                         }
+                        else
+                        {
+                            throw new ExceptionWithConfigData("Login failed: No captcha provided", configData);
+                        }
                     }
                 }
 
@@ -1065,6 +1073,7 @@ namespace Jackett.Common.Indexers.Definitions
             {
                 configData.LastError.Value = "Got captcha during automatic login, please reconfigure manually";
                 logger.Error(string.Format("CardigannIndexer ({0}): Found captcha during automatic login, aborting", Id));
+                landingResultDocument = null;
                 return null;
             }