diff --git a/navpoint/usb.py b/navpoint/usb.py
index ea4cb16..e60932f 100644
--- a/navpoint/usb.py
+++ b/navpoint/usb.py
@@ -29,14 +29,15 @@ def main(port, intercom):
                     time = parsed_data.time
                     date = parsed_data.date
                     navpoint.content.content = f"""<?xml version='1.0' encoding='us-ascii'?><kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2"><Document><Style id="icon"><IconStyle><Icon><href>http://127.0.0.1:8888/marker.png</href></Icon></IconStyle></Style><name>Navpoint</name><open>1</open><Placemark><name>Position</name><styleUrl>#icon</styleUrl><Point><coordinates>{lon},{lat},0</coordinates></Point><description>{date} {time} UTC</description></Placemark></Document></kml>"""
-                    intercom.put(
-                        "LocationUpdate",
-                        {
-                            "lat": lat,
-                            "lon": lon,
-                            "time": f"{date} {time} UTC",
-                        },
-                    )
+                    if lat or lon: # ignore 0, 0 fixes
+                        intercom.put(
+                            "LocationUpdate",
+                            {
+                                "lat": lat,
+                                "lon": lon,
+                                "time": f"{date} {time} UTC",
+                            },
+                        )
 
                 except AttributeError:
                     pass