diff --git a/pyroengine/core.py b/pyroengine/core.py
index 2b2f4cf..21d15c8 100644
--- a/pyroengine/core.py
+++ b/pyroengine/core.py
@@ -178,14 +178,14 @@ def run(self, period: int = 30) -> None:
                 # Analyze each captured frame
                 if queue:
                     while not queue.empty():
-                        cam_id, img = queue.get()
+                        cam_id, frame = queue.get()
                         try:
-                            self.analyze_stream(img, cam_id)
+                            self.analyze_stream(frame, cam_id)
                         except Exception as e:
                             logging.error(f"Error running prediction: {e}")
 
                     # Use the last frame to check if it's day_time
-                    self.day_time = is_day_time(None, img, "ir")
+                    self.day_time = is_day_time(None, frame, "ir")
 
                 # Process alerts
                 try: