diff --git a/app/controllers/api/v0/guidance_groups_controller.rb b/app/controllers/api/v0/guidance_groups_controller.rb
index 3eafd8a..29ee861 100644
--- a/app/controllers/api/v0/guidance_groups_controller.rb
+++ b/app/controllers/api/v0/guidance_groups_controller.rb
@@ -27,10 +27,10 @@
           if GuidanceGroup.can_view(@user, params[:id])
             respond_with get_resource
           else
-            render json: '"You do not have authorization to view this"', status: 401
+            render json: I18n.t("api.bad_resource"), status: 401
           end
         else
-          render json: '"You do not have authorization to use this api endpoint"', status: 401
+          render json: I18n.t("api.no_auth_for_endpoint"), status: 401
         end
       end
 
@@ -49,7 +49,7 @@
           respond_with @all_viewable_groups
         else
           #render unauthorised
-          render json: '"You do not have authorization to use this api endpoint"', status: 401
+          render json: I18n.t("api.no_auth_for_endpoint"), status: 401
         end
       end
 
diff --git a/app/controllers/api/v0/guidances_controller.rb b/app/controllers/api/v0/guidances_controller.rb
index 0f1ff43..679244f 100644
--- a/app/controllers/api/v0/guidances_controller.rb
+++ b/app/controllers/api/v0/guidances_controller.rb
@@ -26,10 +26,10 @@
           if Guidance.can_view(@user, params[:id])
             respond_with get_resource
           else
-            render json: '"you do not have authorisation to view this resource"', status: 401
+            render json: I18n.t("api.bad_resource"), status: 401
           end
         else
-          render json: '"You do not have authorisation to use this api endpoint"', status: 401
+          render I18n.t("api.no_auth_for_endpoint"), status: 401
         end
       end
 
@@ -45,7 +45,7 @@
           @all_viewable_guidances = Guidance.all_viewable(@user)
           respond_with @all_viewable_guidances
         else
-          render json '"You do not have authorisation to view this api endpoint"', status: 401
+          render json I18n.t("api.no_auth_for_endpoint"), status: 401
         end
       end
 
diff --git a/app/controllers/api/v0/projects_controller.rb b/app/controllers/api/v0/projects_controller.rb
index aa6cabb..fd33c94 100644
--- a/app/controllers/api/v0/projects_controller.rb
+++ b/app/controllers/api/v0/projects_controller.rb
@@ -34,15 +34,15 @@
                 dmptemplate = organization.templates.find_by title: params[:template][:name]
               # else error: organization has more than one template and template name unspecified
               else
-                render json: 'error:"Organization has more than one template and template name unspecified or invalid"', status: 400 and return
+                render json: I18n.t("api.org_multiple_templates"), status: 400 and return
               end
             # else error: organization specified is not a funder
             else
-              render json: 'error:"Organization specified is not a funder"', status: 400 and return
+              render json: I18n.t("api.org_not_funder"), status: 400 and return
             end
           # else error: organization does not exist
           else
-            render json: 'error:"Organization does not exist"', status: 400 and return
+            render json: I18n.t("api.org_dosent_exist"), status: 400 and return
           end
 
           all_groups = []
@@ -86,7 +86,7 @@
             render json: get_resource.errors, status: :unprocessable_entity
           end
         else
-          render json: 'error:"You do not have authorisation to view this api endpoint"', status: 400 and return
+          render json: I18n.t("api.no_auth_for_endpoint"), status: 400 and return
         end
       end