diff --git a/detect.py b/detect.py
index 7fc75c08..b52f7826 100644
--- a/detect.py
+++ b/detect.py
@@ -104,7 +104,7 @@ def detect(save_img=False):
         # Process detections
         for i, det in enumerate(pred):  # detections for image i
             if webcam:  # batch_size >= 1
-                p, s, im0 = path[i], '%g: ' % i, im0s[i]
+                p, s, im0 = path[i], '%g: ' % i, im0s[i].copy()
             else:
                 p, s, im0 = path, '', im0s