diff --git a/src/ezdxf/addons/acisbrowser/browser.py b/src/ezdxf/addons/acisbrowser/browser.py
index dad2e31ce..b98b272d9 100644
--- a/src/ezdxf/addons/acisbrowser/browser.py
+++ b/src/ezdxf/addons/acisbrowser/browser.py
@@ -174,7 +174,7 @@ def load_dxf(self, path: str):
             self.statusbar.showMessage(self.make_loading_message())
         else:
             msg = f"DXF file '{path}' contains no ACIS data"
-            QMessageBox.information(self, "Loading Error", msg)
+            QMessageBox.information(self, "Loading Error", msg)  # type: ignore
 
     def make_loading_message(self) -> str:
         assert self.doc is not None
diff --git a/src/ezdxf/addons/drawing/frontend.py b/src/ezdxf/addons/drawing/frontend.py
index c437e3c4e..b4a6902bf 100644
--- a/src/ezdxf/addons/drawing/frontend.py
+++ b/src/ezdxf/addons/drawing/frontend.py
@@ -717,13 +717,13 @@ def draw_image_entity(self, entity: DXFGraphic, properties: Properties) -> None:
 
             if loaded_image is not None:
                 color: RGB | RGBA
-                loaded_image = loaded_image.convert("RGBA")
+                loaded_image = loaded_image.convert("RGBA")  # type: ignore
 
                 if image.dxf.contrast != 50:
                     # note: this is only an approximation.
                     # Unclear what the exact operation AutoCAD uses
                     amount = image.dxf.contrast / 50
-                    loaded_image = PIL.ImageEnhance.Contrast(loaded_image).enhance(
+                    loaded_image = PIL.ImageEnhance.Contrast(loaded_image).enhance(  # type: ignore
                         amount
                     )