diff --git a/bin/gpsmap.py b/bin/gpsmap.py
index 4ad0663..cdfe6ed 100644
--- a/bin/gpsmap.py
+++ b/bin/gpsmap.py
@@ -152,6 +152,11 @@ def sort_key(item):
     return (item.taken_at or datetime.max, item.path.name)
 
 
+def is_invalid_coord(lat, lon):
+    # Treat Null Island coordinates as invalid/missing GPS.
+    return abs(float(lat)) < 1e-9 and abs(float(lon)) < 1e-9
+
+
 def haversine_km(lat1, lon1, lat2, lon2):
     r = 6371.0
     p1 = math.radians(lat1)
@@ -179,6 +184,9 @@ def collect_media(media_dir):
             continue
 
         lat, lon, taken_at = meta
+        if is_invalid_coord(lat, lon):
+            print(f"Skip invalid GPS (0,0): {file_path.name}")
+            continue
         item = MediaItem(file_path, lat, lon, kind, taken_at)
         items.append(item)
         print(f"GPS: {file_path.name} -> ({lat}, {lon}) [{kind}]")