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-rw-r--r--lib/coderay/helpers/plugin.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/coderay/helpers/plugin.rb b/lib/coderay/helpers/plugin.rb
index d03dcfb..4ae8e7a 100644
--- a/lib/coderay/helpers/plugin.rb
+++ b/lib/coderay/helpers/plugin.rb
@@ -245,7 +245,7 @@ protected
id
elsif id.is_a? String
if id[/\w+/] == id
- id.to_sym
+ id.downcase.to_sym
else
raise ArgumentError, "Invalid id: '#{id}' given."
end