diff --git a/pkgs/development/python-modules/fastnumbers/default.nix b/pkgs/development/python-modules/fastnumbers/default.nix
index e3a91b366d3f..7be3e25698ba 100644
--- a/pkgs/development/python-modules/fastnumbers/default.nix
+++ b/pkgs/development/python-modules/fastnumbers/default.nix
@@ -1,7 +1,6 @@
 { lib
 , stdenv
 , buildPythonPackage
-, fastnumbers
 , fetchFromGitHub
 , hypothesis
 , numpy
@@ -43,6 +42,10 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
+  pytestFlagsArray = [
+    "--hypothesis-profile=standard"
+  ];
+
   pythonImportsCheck = [
     "fastnumbers"
   ];