diff --git a/pkgs/development/python-modules/Flask-PyMongo/default.nix b/pkgs/development/python-modules/Flask-PyMongo/default.nix
index 12212b60786..3a01c9ba983 100644
--- a/pkgs/development/python-modules/Flask-PyMongo/default.nix
+++ b/pkgs/development/python-modules/Flask-PyMongo/default.nix
@@ -8,18 +8,19 @@
 }:
 
 buildPythonPackage rec {
-  pname = "Flask-PyMongo";
+  pname = "flask-pymongo";
   version = "2.3.0";
 
   src = fetchPypi {
-    inherit pname version;
+    pname = "Flask-PyMongo";
+    inherit version;
     sha256 = "051kwdk07y4xm4yawcjhn6bz8swxp9nanv7jj35mz2l0r0nv03k2";
   };
 
   checkInputs = [ pytest ];
 
   checkPhase = ''
-    py.test
+    pytest
   '';
 
   # Tests seem to hang