diff --git a/aperoll/widgets/centroid_table.py b/aperoll/widgets/centroid_table.py
index 723e4c1..f859893 100644
--- a/aperoll/widgets/centroid_table.py
+++ b/aperoll/widgets/centroid_table.py
@@ -127,7 +127,7 @@ def _display_table(self):
                 item = self._table[row][col]
                 if colname == "enable":
                     checkbox = self._q_table.cellWidget(row, col)
-                    checkbox.setChecked(item)
+                    checkbox.setChecked(bool(item))
                 else:
                     self._q_table.item(row, col).setText(
                         self.format[colname].format(item)
diff --git a/aperoll/widgets/star_plot.py b/aperoll/widgets/star_plot.py
index 32bdd34..a831d35 100644
--- a/aperoll/widgets/star_plot.py
+++ b/aperoll/widgets/star_plot.py
@@ -664,18 +664,22 @@ def set_onboard_attitude(self, attitude):
             self.alternate_attitude = attitude
 
     def enable_alternate_fov(self, enable=True):
+        enable = bool(enable)
         self.state.enable_alternate_fov = enable
         self.alternate_fov.setVisible(enable)
 
     def show_alternate_fov(self, show=True):
+        show = bool(show)
         if self.state.enable_alternate_fov:
             self.alternate_fov.setVisible(show)
 
     def enable_fov(self, enable=True):
+        enable = bool(enable)
         self.state.enable_fov = enable
         self.main_fov.setVisible(enable)
 
     def show_fov(self, show=True):
+        show = bool(show)
         if self.state.enable_fov:
             self.main_fov.setVisible(show)
 
@@ -684,10 +688,12 @@ def set_centroids(self, centroids):
         self.alternate_fov.set_centroids(centroids)
 
     def enable_catalog(self, enable=True):
+        enable = bool(enable)
         self.state.enable_catalog = enable
         self.catalog.setVisible(enable)
 
     def show_catalog(self, show=True):
+        show = bool(show)
         if self.state.enable_catalog:
             self.catalog.setVisible(show)