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-rw-r--r--railties/lib/rails/configuration.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/railties/lib/rails/configuration.rb b/railties/lib/rails/configuration.rb
index 102a0836dc..3f43a48e2e 100644
--- a/railties/lib/rails/configuration.rb
+++ b/railties/lib/rails/configuration.rb
@@ -31,7 +31,7 @@ module Rails
def root
@root ||= begin
call_stack = caller.map { |p| p.split(':').first }
- root_path = call_stack.detect { |p| p !~ %r[railties/lib/rails] }
+ root_path = call_stack.detect { |p| p !~ %r[railties/lib/rails|rack/lib/rack] }
root_path = File.dirname(root_path)
while root_path && File.directory?(root_path) && !File.exist?("#{root_path}/config.ru")