diff --git a/pkgs/development/python-modules/sphinxcontrib-bibtex/default.nix b/pkgs/development/python-modules/sphinxcontrib-bibtex/default.nix
index 36fb29fde595..bc9a90efcf23 100644
--- a/pkgs/development/python-modules/sphinxcontrib-bibtex/default.nix
+++ b/pkgs/development/python-modules/sphinxcontrib-bibtex/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi
+{ stdenv, buildPythonPackage, fetchPypi, isPy3k
 , oset, pybtex, pybtex-docutils, sphinx
 }:
 
@@ -6,6 +6,8 @@ buildPythonPackage rec {
   version = "1.0.0";
   pname = "sphinxcontrib-bibtex";
 
+  disabled = !isPy3k;
+
   src = fetchPypi {
     inherit pname version;
     sha256 = "629612b001f86784669d65e662377a482052decfd9a0a17c46860878eef7b9e0";