diff --git a/demo/inference.py b/demo/inference.py
index efff86a7..7326c87b 100644
--- a/demo/inference.py
+++ b/demo/inference.py
@@ -249,7 +249,7 @@ def main():
         count += 1
 
         if not ret:
-            continue
+            break
 
         if count % skip_frame_cnt != 0:
             continue