diff --git a/Rakefile b/Rakefile
index ed287f5..4b54ec3 100644
--- a/Rakefile
+++ b/Rakefile
@@ -126,7 +126,7 @@ def dependencies(source, done = [])
   d_file.each do |d|
     SRC_DIRS.each do |dir|
       if File.dirname(d) == dir then
-        d_list << d
+        d_list << d unless d.end_with?(".inc")
       end
     end
   end