diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index fda682b6da28..562103c8dbcb 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -12910,6 +12910,8 @@ in modules // {
 
     buildInputs = with self; [ nose ];
 
+    checkPhase = ''nosetests'';
+
     meta = {
       description = "Emoji for Python";
       homepage = https://pypi.python.org/pypi/emoji/;