diff --git a/client/i18n/english.coffee b/client/i18n/english.coffee
index c16ceb87..d9500546 100644
--- a/client/i18n/english.coffee
+++ b/client/i18n/english.coffee
@@ -36,5 +36,6 @@ en =
     signupCodeRequired: "Signup code is required."
     signupCodeIncorrect: "Signup code is incorrect."
     signInRequired: "You must be signed in to do that."
+    usernameIsEmail: "Username cannot be an email address."
 
 T9n.map "en", en
diff --git a/client/i18n/german.coffee b/client/i18n/german.coffee
index c4df433d..3a5b2062 100644
--- a/client/i18n/german.coffee
+++ b/client/i18n/german.coffee
@@ -37,5 +37,6 @@ de =
     signupCodeRequired: "Registrierungscode benötigt."
     signupCodeIncorrect: "Registrierungscode ungültig."
     signInRequired: "Sie müssen sich anmelden."
+    usernameIsEmail: "Benutzername kann nicht eine E-Mail."
 
 T9n.map "de", de
diff --git a/client/i18n/polish.coffee b/client/i18n/polish.coffee
index 6bcc7a38..9230871c 100644
--- a/client/i18n/polish.coffee
+++ b/client/i18n/polish.coffee
@@ -36,5 +36,6 @@ pl =
     signupCodeRequired: "Wymagany jest kod rejestracji."
     signupCodeIncorrect: "Kod rejestracji jest nieprawidłowy."
     signInRequired: "Musisz być zalogowany, aby to zrobić."
+    usernameIsEmail: "Nazwa użytkownika nie może być adres e-mail."
 
 T9n.map "pl", pl
diff --git a/client/i18n/spanish.coffee b/client/i18n/spanish.coffee
index 84e85899..a11c5c1f 100644
--- a/client/i18n/spanish.coffee
+++ b/client/i18n/spanish.coffee
@@ -35,5 +35,6 @@ es =
     signupCodeRequired: "Código para suscribir es necesario."
     signupCodeIncorrect: "Código para suscribir no coincide."
     signInRequired: "Debes iniciar sesión para hacer eso."
+    usernameIsEmail: "Usuario no puede ser Email."
 
 T9n.map "es", es