diff --git a/lib/uri/common.rb b/lib/uri/common.rb
index abe127f54c..38b0eb50d2 100644
--- a/lib/uri/common.rb
+++ b/lib/uri/common.rb
@@ -86,7 +86,7 @@ module URI
     #
     # == Examples
     #
-    #   p = URI::Parser.new(:ESCAPED => "(?:%[a-fA-F0-9]{2}|%u[a-fA-F0-9]{4})"
+    #   p = URI::Parser.new(:ESCAPED => "(?:%[a-fA-F0-9]{2}|%u[a-fA-F0-9]{4})")
     #   u = p.parse("http://example.jp/%uABCD") #=> #<URI::HTTP:0xb78cf4f8 URL:http://example.jp/%uABCD>
     #   URI.parse(u.to_s) #=> raises URI::InvalidURIError
     #