diff --git a/app/controllers/signup_controller.rb b/app/controllers/signup_controller.rb
index 3c53060..18cf79b 100644
--- a/app/controllers/signup_controller.rb
+++ b/app/controllers/signup_controller.rb
@@ -3,7 +3,7 @@ class SignupController < ApplicationController
 
   def index
     if @user
-      flash[:error] = "You are already signed up."
+      flash[:error] = I18n.t 'controllers.signup_controller.signedup'
       return redirect_to "/"
     end
 
@@ -16,12 +16,12 @@ class SignupController < ApplicationController
 
   def invited
     if @user
-      flash[:error] = "You are already signed up."
+      flash[:error] = I18n.t 'controllers.signup_controller.invalidinv'
       return redirect_to "/"
     end
 
     if !(@invitation = Invitation.where(:code => params[:invitation_code].to_s).first)
-      flash[:error] = "Invalid or expired invitation"
+      flash[:error] = I18n.t 'controllers.signup_controller.invalidinv'
       return redirect_to "/signup"
     end
 
@@ -35,7 +35,7 @@ class SignupController < ApplicationController
 
   def signup
     if !(@invitation = Invitation.where(:code => params[:invitation_code].to_s).first)
-      flash[:error] = "Invalid or expired invitation."
+      flash[:error] = I18n.t 'controllers.signup_controller.invalidinv'
       return redirect_to "/signup"
     end
 
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 475f597..42c08b1 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -412,6 +412,9 @@ en:
       tagstitle: "Tags"
     users_controller:
       usertitle: "Users"
+    signup_controller:
+      signedup: "You are already signed up."
+      invalidinv: "Invalid or expired invitation."
   # views.stories.suggest scop, unable to get it, I don't know why
   suggeststorychanges: "Suggest Story Changes"
   suggestchangesbutton: "Suggest Changes"
diff --git a/config/locales/fr.yml b/config/locales/fr.yml
index 04b99e5..0c33818 100644
--- a/config/locales/fr.yml
+++ b/config/locales/fr.yml
@@ -425,6 +425,9 @@ fr:
       tagstitle: "Marques"
     users_controller:
       usertitle: "Utilisateurs"
+    signup_controller:
+      signedup: "Vous êtes déja inscrit."
+      invalidinv: "Invitation invalide ou expirée."
   # suggest.stories scope, unable to get it so global, I don't know why
   suggeststorychanges: "Suggérer des changements à l'info"
   suggestchangesbutton: "Suggérer des changements"