diff --git a/pkgs/development/python-modules/onnxconverter-common/default.nix b/pkgs/development/python-modules/onnxconverter-common/default.nix
index e61dcd587386..dfe5a03e7cc7 100644
--- a/pkgs/development/python-modules/onnxconverter-common/default.nix
+++ b/pkgs/development/python-modules/onnxconverter-common/default.nix
@@ -29,6 +29,10 @@ buildPythonPackage rec {
     onnx
   ];
 
+  pythonImportsCheck = [
+    "onnxconverter_common"
+  ];
+
   nativeCheckInputs = [
     onnxruntime
     unittestCheckHook
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 0fd08bd1ddcf..51317d3dbaac 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -8366,7 +8366,7 @@ self: super: with self; {
   };
 
   onnxconverter-common = callPackage ../development/python-modules/onnxconverter-common {
-    protobuf = protobuf3;
+    inherit (pkgs) protobuf;
   };
 
   onnxmltools = callPackage ../development/python-modules/onnxmltools { };