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-rw-r--r--activerecord/lib/active_record/fixtures.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/fixtures.rb b/activerecord/lib/active_record/fixtures.rb
index c4decfbf73..c8de310b9c 100644
--- a/activerecord/lib/active_record/fixtures.rb
+++ b/activerecord/lib/active_record/fixtures.rb
@@ -438,7 +438,7 @@ module ActiveRecord
class ClassCache
def initialize(class_names, config)
- @class_names = class_names.dup.stringify_keys
+ @class_names = class_names.stringify_keys
@config = config
end