diff --git a/src/artisanlib/roast_properties.py b/src/artisanlib/roast_properties.py
index ea9ef8d6c..a8b231232 100644
--- a/src/artisanlib/roast_properties.py
+++ b/src/artisanlib/roast_properties.py
@@ -5358,5 +5358,6 @@ def __init__(self, parent, aw:'ApplicationWindow') -> None:
         self.ui.buttonBox.setStandardButtons(QDialogButtonBox.StandardButton.Cancel|QDialogButtonBox.StandardButton.Apply)
         # hack to assign the Apply button the AcceptRole without losing default system translations
         applyButton = self.ui.buttonBox.button(QDialogButtonBox.StandardButton.Apply)
-        self.ui.buttonBox.removeButton(applyButton)
-        self.ui.buttonBox.addButton(applyButton.text(), QDialogButtonBox.ButtonRole.AcceptRole)
+        if applyButton is not None:
+            self.ui.buttonBox.removeButton(applyButton)
+            self.ui.buttonBox.addButton(applyButton.text(), QDialogButtonBox.ButtonRole.AcceptRole)
diff --git a/src/pyproject.toml b/src/pyproject.toml
index 00472fb30..7c20ddd6b 100644
--- a/src/pyproject.toml
+++ b/src/pyproject.toml
@@ -215,7 +215,7 @@ enable='''c-extension-no-member,'''
 
 [tool.mypy]
 files = ["artisanlib/*.py", "plus/*.py"]
-exclude = ['build', 'dist']
+exclude = ['build', 'dist', 'uic']
 ##python_version = "3.7"
 check_untyped_defs = true