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-rw-r--r--activesupport/lib/active_support/hash_with_indifferent_access.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/hash_with_indifferent_access.rb b/activesupport/lib/active_support/hash_with_indifferent_access.rb
index 6b7a897cf2..f64f0f44cc 100644
--- a/activesupport/lib/active_support/hash_with_indifferent_access.rb
+++ b/activesupport/lib/active_support/hash_with_indifferent_access.rb
@@ -1,3 +1,5 @@
+require 'active_support/core_ext/hash/keys'
+
# This class has dubious semantics and we only have it so that
# people can write params[:key] instead of params['key']
# and they get the same value for both keys.