diff --git a/railties/lib/rails/engine.rb b/railties/lib/rails/engine.rb
index 8029a0ca77..72bfe207d7 100644
--- a/railties/lib/rails/engine.rb
+++ b/railties/lib/rails/engine.rb
@@ -335,7 +335,7 @@ module Rails
         unless base.abstract_railtie?
           base.called_from = begin
             # Remove the line number from backtraces making sure we don't leave anything behind
-            call_stack = caller.map { |p| p.split(':')[0..-2].join(':') }
+            call_stack = caller.map { |p| p.sub(/:\d+.*/, '') }
             File.dirname(call_stack.detect { |p| p !~ %r[railties[\w.-]*/lib/rails|rack[\w.-]*/lib/rack] })
           end
         end