1 files changed, 5 insertions, 5 deletions
diff --git a/lib/rexml/doctype.rb b/lib/rexml/doctype.rb
index 678095ae28..0b3c533bb4 100644
--- a/lib/rexml/doctype.rb
+++ b/lib/rexml/doctype.rb
@@ -248,11 +248,11 @@ module REXML
     end
 
     def to_s
-      "<!NOTATION #@name #@middle#{
-        @public ? ' ' + public.inspect : ''
-      }#{
-        @system ? ' ' +@system.inspect : ''
-      }>"
+      notation = "<!NOTATION #{@name} #{@middle}"
+      notation << " #{@public.inspect}" if @public
+      notation << " #{@system.inspect}" if @system
+      notation << ">"
+      notation
     end
 
     def write( output, indent=-1 )