diff --git a/frigate/http.py b/frigate/http.py
index 9c55d68c4..e47e6efc2 100644
--- a/frigate/http.py
+++ b/frigate/http.py
@@ -1118,7 +1118,7 @@ def latest_frame(camera_name):
         height = int(request.args.get("h", str(frame.shape[0])))
         width = int(height * frame.shape[1] / frame.shape[0])
 
-        if not frame:
+        if frame is None:
             return "Unable to get valid frame from {}".format(camera_name), 500
 
         if height < 1 or width < 1: