diff --git a/src/Jackett.Common/Definitions/acrossthetasman.yml b/src/Jackett.Common/Definitions/acrossthetasman.yml
index 5e46c4a0d..64d68272f 100644
--- a/src/Jackett.Common/Definitions/acrossthetasman.yml
+++ b/src/Jackett.Common/Definitions/acrossthetasman.yml
@@ -47,6 +47,8 @@ login:
     vb_login_password: "{{ .Config.password }}"
     cookieuser: 1
     do: login
+  error:
+    - selector: div.restore:contains("invalid username or password")
   test:
     path: torrents.php
     selector: a[href*="logout.php"]
diff --git a/src/Jackett.Common/Definitions/bestcore.yml b/src/Jackett.Common/Definitions/bestcore.yml
index d73c29275..16c39a1b2 100644
--- a/src/Jackett.Common/Definitions/bestcore.yml
+++ b/src/Jackett.Common/Definitions/bestcore.yml
@@ -106,6 +106,8 @@ login:
   inputs:
     username: "{{ .Config.username }}"
     password: "{{ .Config.password }}"
+  error:
+    - selector: :root:contains("Sikertelen bejelentkezés")
   test:
     path: index.php
     selector: a[href^="logout.php?c="]
diff --git a/src/Jackett.Common/Definitions/carpathians.yml b/src/Jackett.Common/Definitions/carpathians.yml
index eb2137e79..0ab810048 100644
--- a/src/Jackett.Common/Definitions/carpathians.yml
+++ b/src/Jackett.Common/Definitions/carpathians.yml
@@ -72,6 +72,8 @@ login:
   inputs:
     username: "{{ .Config.username }}"
     password: "{{ .Config.password }}"
+  error:
+    - selector: table.main:contains("Sikertelen bejelentkezés")
   test:
     path: index.php
     selector: a[href^="logout.php"]
diff --git a/src/Jackett.Common/Definitions/deildu.yml b/src/Jackett.Common/Definitions/deildu.yml
index 0b0347a36..d8b0d964a 100644
--- a/src/Jackett.Common/Definitions/deildu.yml
+++ b/src/Jackett.Common/Definitions/deildu.yml
@@ -62,6 +62,8 @@ login:
     username: "{{ .Config.username }}"
     password: "{{ .Config.password }}"
     keeplogged: 1
+  error:
+    - selector: table.main:contains("Login failed")
   test:
     path: index.php
     selector: a[href^="logout.php"]
diff --git a/src/Jackett.Common/Definitions/diablotorrent.yml b/src/Jackett.Common/Definitions/diablotorrent.yml
index e6bb2df3b..6f9d85057 100644
--- a/src/Jackett.Common/Definitions/diablotorrent.yml
+++ b/src/Jackett.Common/Definitions/diablotorrent.yml
@@ -100,6 +100,8 @@ login:
     login: 1
     belepes: 1
     rhash: 123
+  error:
+    - selector: :root:contains("{\"hiba\":true,")
   test:
     path: browse
     selector: a[href*="logout"]
diff --git a/src/Jackett.Common/Definitions/futuretorrent.yml b/src/Jackett.Common/Definitions/futuretorrent.yml
index 5b0539236..742f9a0cc 100644
--- a/src/Jackett.Common/Definitions/futuretorrent.yml
+++ b/src/Jackett.Common/Definitions/futuretorrent.yml
@@ -114,6 +114,16 @@ login:
   inputs:
     username: "{{ .Config.username }}"
     password: "{{ .Config.password }}"
+  error:
+    - selector: table:has(a[href*="login.php?error=1"])
+      message:
+        text: "ERROR: Incorrect username!"
+    - selector: table:has(a[href*="login.php?error=4"])
+      message:
+        text: "ERROR: Incorrect password!"
+    - selector: table:has(a[href*="login.php?error="])
+      message:
+        text: "ERROR: Something went wrong during login!"
   test:
     path: index.php
     selector: a[href*="/logout.php"]