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-rw-r--r--actionpack/lib/action_view/helpers/asset_tag_helper.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/actionpack/lib/action_view/helpers/asset_tag_helper.rb b/actionpack/lib/action_view/helpers/asset_tag_helper.rb
index c98b7a3638..418092cf88 100644
--- a/actionpack/lib/action_view/helpers/asset_tag_helper.rb
+++ b/actionpack/lib/action_view/helpers/asset_tag_helper.rb
@@ -60,7 +60,7 @@ module ActionView
def javascript_include_tag(*sources)
options = sources.last.is_a?(Hash) ? sources.pop.stringify_keys : { }
if sources.first == :defaults
- sources = @@javascript_default_sources
+ sources = @@javascript_default_sources.dup
if defined?(RAILS_ROOT) and File.exists?("#{RAILS_ROOT}/public/javascripts/application.js")
sources << 'application'
end