diff --git a/wigglecam/services/backends/cameras/virtualcamera.py b/wigglecam/services/backends/cameras/virtualcamera.py
index dd3a61c..7e352f0 100644
--- a/wigglecam/services/backends/cameras/virtualcamera.py
+++ b/wigglecam/services/backends/cameras/virtualcamera.py
@@ -54,7 +54,9 @@ def start(self, nominal_framerate: int = None):
     def stop(self):
         super().stop()
 
-        self._producer_thread.stop()
+        if self._producer_thread and self._producer_thread.is_alive():
+            self._producer_thread.stop()
+            self._producer_thread.join()
 
     def camera_alive(self) -> bool:
         super_alive = super().camera_alive()