diff --git a/frigate/detectors/detection_runners.py b/frigate/detectors/detection_runners.py
index 5d1cbf7c2..6a6e46a6c 100644
--- a/frigate/detectors/detection_runners.py
+++ b/frigate/detectors/detection_runners.py
@@ -424,7 +424,8 @@ def get_optimized_runner(
 ) -> BaseModelRunner:
     """Get an optimized runner for the hardware."""
     device = device or "AUTO"
-    if is_rknn_compatible(model_path):
+
+    if device != "CPU" and is_rknn_compatible(model_path):
         rknn_path = auto_convert_model(model_path)
 
         if rknn_path: