diff --git a/topaz/objects/stringobject.py b/topaz/objects/stringobject.py
index 7f87260a5..a5ab983f8 100644
--- a/topaz/objects/stringobject.py
+++ b/topaz/objects/stringobject.py
@@ -724,8 +724,6 @@ def method_to_i(self, space, radix=10):
 
     @classdef.method("to_f")
     def method_to_f(self, space):
-        # can't use rstring_to_float here because of rpython?
-
         value = 0.0
         precision = False
         pointer = 0.1