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-rw-r--r--actioncable/lib/action_cable/connection/client_socket.rb4
1 files changed, 2 insertions, 2 deletions
diff --git a/actioncable/lib/action_cable/connection/client_socket.rb b/actioncable/lib/action_cable/connection/client_socket.rb
index 70a2bbecb1..c7e30e78c8 100644
--- a/actioncable/lib/action_cable/connection/client_socket.rb
+++ b/actioncable/lib/action_cable/connection/client_socket.rb
@@ -90,8 +90,8 @@ module ActionCable
reason ||= ""
unless code == 1000 || (code >= 3000 && code <= 4999)
- raise ArgumentError, "Failed to execute 'close' on WebSocket: " +
- "The code must be either 1000, or between 3000 and 4999. " +
+ raise ArgumentError, "Failed to execute 'close' on WebSocket: " \
+ "The code must be either 1000, or between 3000 and 4999. " \
"#{code} is neither."
end