diff --git a/pkgs/development/python-modules/pyglm/default.nix b/pkgs/development/python-modules/pyglm/default.nix
index 41d7277b1ac2..20b4996ca679 100644
--- a/pkgs/development/python-modules/pyglm/default.nix
+++ b/pkgs/development/python-modules/pyglm/default.nix
@@ -23,7 +23,15 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
-  pythonImportsCheck = [ "glm" ];
+  # Having the source root in `sys.path` causes import issues
+  preCheck = ''
+    cd test
+  '';
+
+  pythonImportsCheck = [
+    "pyglm"
+    "glm"
+  ];
 
   meta = with lib; {
     homepage = "https://github.com/Zuzu-Typ/PyGLM";