diff --git a/modem/frame_handler.py b/modem/frame_handler.py
index bd50cc6c..b4a6f469 100644
--- a/modem/frame_handler.py
+++ b/modem/frame_handler.py
@@ -36,7 +36,7 @@ class FrameHandler():
         activity = {
             "direction": "received",
             "snr": self.details['snr'],
-            "offset": self.details['freq_offset'],
+            "freq_offset": self.details['freq_offset'],
             "activity_type": frame["frame_type"]
         }
         if "origin" in frame: