diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index 0828df8d68c4bf76111dff6588d430e945343685..72191c60c43ead36132d20ce86648a88e603bd9f 100755
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -1242,8 +1242,6 @@ def compute_type(type_name)
           begin
             instance_eval(modularized_name)
           rescue NameError => e
-            first_module = modularized_name.split("::").first
-            raise unless e.to_s.include? first_module
             instance_eval(type_name)
           end
         end