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-rw-r--r--actionpack/lib/action_dispatch/routing/mapper.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index 31eb6104fe..f3970d5445 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -611,7 +611,7 @@ module ActionDispatch
end
raise ArgumentError, "A rack application must be specified" unless app.respond_to?(:call)
- raise ArgumentError, <<-MSG.strip_heredoc unless path
+ raise ArgumentError, <<~MSG unless path
Must be called with mount point
mount SomeRackApp, at: "some_route"