diff --git a/pyproject.toml b/pyproject.toml
index 36746e79..54458486 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -298,11 +298,6 @@ disallow_untyped_defs = true
 disallow_incomplete_defs = true
 check_untyped_defs = true
 
-# ignores
-disable_error_code = ["attr-defined"] #TODO: draccus issue
-
-# include = "src/lerobot/configs/**/*.py"
-
 # [[tool.mypy.overrides]]
 # module = "lerobot.optim.*"
 # ignore_errors = false
@@ -319,9 +314,9 @@ ignore_errors = false
 # module = "lerobot.datasets.*"
 # ignore_errors = false
 
-# [[tool.mypy.overrides]]
-# module = "lerobot.cameras.*"
-# ignore_errors = false
+[[tool.mypy.overrides]]
+module = "lerobot.cameras.*"
+ignore_errors = false
 
 # [[tool.mypy.overrides]]
 # module = "lerobot.motors.*"
diff --git a/src/lerobot/cameras/opencv/camera_opencv.py b/src/lerobot/cameras/opencv/camera_opencv.py
index 708340ab..89d5995f 100644
--- a/src/lerobot/cameras/opencv/camera_opencv.py
+++ b/src/lerobot/cameras/opencv/camera_opencv.py
@@ -244,6 +244,10 @@ class OpenCVCamera(Camera):
         """Validates and sets the camera's FOURCC code."""
 
         fourcc_code = cv2.VideoWriter_fourcc(*self.config.fourcc)
+
+        if self.videocapture is None:
+            raise DeviceNotConnectedError(f"{self} videocapture is not initialized")
+
         success = self.videocapture.set(cv2.CAP_PROP_FOURCC, fourcc_code)
         actual_fourcc_code = self.videocapture.get(cv2.CAP_PROP_FOURCC)