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-rw-r--r--activesupport/lib/active_support/core_ext/range/include_range.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/range/include_range.rb b/activesupport/lib/active_support/core_ext/range/include_range.rb
index 3af66aaf2f..3a07401c8a 100644
--- a/activesupport/lib/active_support/core_ext/range/include_range.rb
+++ b/activesupport/lib/active_support/core_ext/range/include_range.rb
@@ -1,3 +1,5 @@
+require 'active_support/core_ext/module/aliasing'
+
class Range
# Extends the default Range#include? to support range comparisons.
# (1..5).include?(1..5) # => true