diff --git a/src/main/python/test.py b/src/main/python/test.py
index 234eb79..3875ded 100644
--- a/src/main/python/test.py
+++ b/src/main/python/test.py
@@ -12,7 +12,8 @@
 while(True):
 
     ret, frame = cap.read()
-
+    assert ret 
+    
     d = Detector()
 
     # convert tuple from (height, width, # of channels) to just (height, width)