diff --git a/ruby-debug-base-0.10.4-java/lib/linecache-ruby.rb b/ruby-debug-base-0.10.4-java/lib/linecache-ruby.rb
index 51340f1..3d200d3 100644
--- a/ruby-debug-base-0.10.4-java/lib/linecache-ruby.rb
+++ b/ruby-debug-base-0.10.4-java/lib/linecache-ruby.rb
@@ -5,7 +5,7 @@ module TraceLineNumbers
   
   # Trivial implementation allowing to stop on every line.
   def lnums_for_str(code)
-    (1..code.entries.size).to_a
+    (1..code.lines.count).to_a
   end
   module_function :lnums_for_str