diff --git a/pkgs/development/python-modules/telethon-session-sqlalchemy/default.nix b/pkgs/development/python-modules/telethon-session-sqlalchemy/default.nix
index c6d3a21b10b..da2fd2cd22d 100644
--- a/pkgs/development/python-modules/telethon-session-sqlalchemy/default.nix
+++ b/pkgs/development/python-modules/telethon-session-sqlalchemy/default.nix
@@ -1,9 +1,11 @@
-{ lib, buildPythonPackage, fetchPypi, sqlalchemy, telethon }:
+{ lib, buildPythonPackage, fetchPypi, isPy3k, sqlalchemy }:
 
 buildPythonPackage rec {
   pname = "telethon-session-sqlalchemy";
   version = "0.2.5";
 
+  disabled = !isPy3k;
+
   src = fetchPypi {
     inherit pname version;
     sha256 = "b392096b14e5cdc4040d3900cc2be7847b160ed77e5c861a6bd07d75d8e17a85";