diff --git a/config/locales/cmtool.en.yml b/config/locales/cmtool.en.yml
index ddbab55..6810967 100644
--- a/config/locales/cmtool.en.yml
+++ b/config/locales/cmtool.en.yml
@@ -87,3 +87,9 @@ en:
           image: Images
           directory: Directories
           yml_file: Yml files
+    errors:
+      models:
+        cmtool/contact_form:
+          attributes:
+            base:
+              bad_intentions: This message contains unwanted content
diff --git a/config/locales/cmtool.nl.yml b/config/locales/cmtool.nl.yml
index a442a4f..13ad4c4 100644
--- a/config/locales/cmtool.nl.yml
+++ b/config/locales/cmtool.nl.yml
@@ -85,3 +85,9 @@ nl:
           newsletter_subscription: Newsletter subscriptions
           image: Images
           directory: Directories
+    errors:
+      models:
+        cmtool/contact_form:
+          attributes:
+            base:
+              bad_intentions: Dit bericht bevat ongewenste inhoud