diff --git a/activesupport/lib/active_support/core_ext/module/delegation.rb b/activesupport/lib/active_support/core_ext/module/delegation.rb
index a5f4d03256..9b7a429db9 100644
--- a/activesupport/lib/active_support/core_ext/module/delegation.rb
+++ b/activesupport/lib/active_support/core_ext/module/delegation.rb
@@ -167,7 +167,7 @@ def delegate(*methods)
         ''
       end
 
-    file, line = caller.first.split(':', 2)
+    file, line = caller(1, 1).first.split(':', 2)
     line = line.to_i
 
     to = to.to_s