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-rw-r--r--actionpack/lib/action_dispatch/routing/route_set.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/actionpack/lib/action_dispatch/routing/route_set.rb b/actionpack/lib/action_dispatch/routing/route_set.rb
index 10c8d748df..a03fb4cee7 100644
--- a/actionpack/lib/action_dispatch/routing/route_set.rb
+++ b/actionpack/lib/action_dispatch/routing/route_set.rb
@@ -220,7 +220,7 @@ module ActionDispatch
def initialize(route, options)
@options = options
- @segment_keys = route.segment_keys
+ @segment_keys = route.segment_keys.uniq
@route = route
end