diff --git a/lib/administrate.rb b/lib/administrate.rb
index 50521ffcd5..3dff5bd624 100644
--- a/lib/administrate.rb
+++ b/lib/administrate.rb
@@ -27,7 +27,7 @@ def self.warn_of_deprecated_method(klass, method)
       "If you are seeing this message you are probably " +
       "using a dashboard that depends explicitly on it. " +
       "Please make sure you update it to a version that " +
-      "does not use a deprecated API"
+      "does not use a deprecated API",
     )
   end
 end