diff --git a/pkgs/development/python-modules/behave/default.nix b/pkgs/development/python-modules/behave/default.nix
index 6fc3f16b3ad2..7ad3489553c2 100644
--- a/pkgs/development/python-modules/behave/default.nix
+++ b/pkgs/development/python-modules/behave/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi
+{ stdenv, fetchPypi, fetchpatch
 , buildPythonApplication, python, pythonOlder
 , mock, nose, pathpy, pyhamcrest, pytest
 , glibcLocales, parse, parse-type, six
@@ -13,6 +13,14 @@ buildPythonApplication rec {
     sha256 = "11hsz365qglvpp1m1w16239c3kiw15lw7adha49lqaakm8kj6rmr";
   };
 
+  patches = [
+    # Fix tests on Python 2.7
+    (fetchpatch {
+      url = https://github.com/behave/behave/commit/0a9430a94881cd18437deb03d2ae23afea0f009c.patch;
+      sha256 = "1nrh9ii6ik6gw2kjh8a6jk4mg5yqw3jfjfllbyxardclsab62ydy";
+    })
+  ];
+
   checkInputs = [ mock nose pathpy pyhamcrest pytest ];
   buildInputs = [ glibcLocales ];
   propagatedBuildInputs = [ parse parse-type six ] ++ stdenv.lib.optional (pythonOlder "3.0") traceback2;