diff --git a/pkgs/development/python-modules/pyownet/default.nix b/pkgs/development/python-modules/pyownet/default.nix
index 2bdc18e1e244..9a368c26087e 100644
--- a/pkgs/development/python-modules/pyownet/default.nix
+++ b/pkgs/development/python-modules/pyownet/default.nix
@@ -14,6 +14,10 @@ buildPythonPackage rec {
     sha256 = "4f2fa4471c2f806b35090bdc6c092305c6eded3ff3736f8b586d35bdb157de62";
   };
 
+  postPatch = ''
+    sed -i '/use_2to3/d' setup.py
+  '';
+
   # tests access network
   doCheck = false;