diff --git a/waflib/Tools/ruby.py b/waflib/Tools/ruby.py
index 5a1a8261..e3eb2c5b 100644
--- a/waflib/Tools/ruby.py
+++ b/waflib/Tools/ruby.py
@@ -28,7 +28,7 @@ from waflib.TaskGen import before_method, feature, extension
 from waflib.Configure import conf
 
 @feature('rubyext')
-@before_method('apply_incpaths', 'apply_lib_vars', 'apply_bundle', 'apply_link')
+@before_method('apply_incpaths', 'process_source', 'apply_bundle', 'apply_link')
 def init_rubyext(self):
 	"""
 	Add required variables for ruby extensions