1 files changed, 1 insertions, 1 deletions
diff --git a/lib/rdoc/rdoc.rb b/lib/rdoc/rdoc.rb
index 230639fb0c..10daefd5b9 100644
--- a/lib/rdoc/rdoc.rb
+++ b/lib/rdoc/rdoc.rb
@@ -387,7 +387,7 @@ The internal error was:
               end
 
     if defined? Encoding then
-      if /coding:\s*([\w-]+)/i =~ content[/\A(?:.*\n){0,2}/]
+      if /coding[=:]\s*([^\s;]+)/i =~ content[%r"\A(?:#!.*\n)?.*\n"]
         if enc = ::Encoding.find($1)
           content.force_encoding(enc)
         end