diff --git a/trunk/ripnews/net/nntp.rb b/trunk/ripnews/net/nntp.rb
index ff36d28..73762ba 100644
--- a/trunk/ripnews/net/nntp.rb
+++ b/trunk/ripnews/net/nntp.rb
@@ -118,7 +118,7 @@ class NNTP
     while true
       line = getline
       break if line == '.'
-      line.slice(0) if line.to_s[0...2] == '..'
+      line.slice!(0) if line.to_s[0...2] == '..'
       list << line
     end
     return resp, list