diff --git a/lib/rouge/lexers/objective_c/common.rb b/lib/rouge/lexers/objective_c/common.rb
index c3620212ee..7a708949e7 100644
--- a/lib/rouge/lexers/objective_c/common.rb
+++ b/lib/rouge/lexers/objective_c/common.rb
@@ -44,7 +44,7 @@ def self.extended(base)
             elsif base.at_builtins.include? m[1]
               token base::Name::Builtin
             else
-              token Error
+              token base::Error
             end
           end
 
diff --git a/spec/visual/samples/objective_c b/spec/visual/samples/objective_c
index d6d70457c1..2f61c0d2ff 100644
--- a/spec/visual/samples/objective_c
+++ b/spec/visual/samples/objective_c
@@ -173,3 +173,6 @@ ViewController *controller = [[ViewController alloc] initWithDocument:document c
     builder.thumbnailBarMode = ThumbnailBarModeScrollable;
     builder.pageLabelEnabled = NO;
 }]];
+
+// Invalid Objective-C keyword
+@FOO