diff --git a/gpx-rs/src/core/gpx/common.rs b/gpx-rs/src/core/gpx/common.rs
index bf6883ed1..29897a73f 100644
--- a/gpx-rs/src/core/gpx/common.rs
+++ b/gpx-rs/src/core/gpx/common.rs
@@ -35,14 +35,14 @@ impl LngLatBounds {
     pub fn extend(&mut self, coordinates: LngLat) {
         self.sw.lng = self.sw.lng.min(coordinates.lng);
         self.sw.lat = self.sw.lat.min(coordinates.lat);
-        self.ne.lng = self.ne.lng.min(coordinates.lng);
-        self.ne.lat = self.ne.lat.min(coordinates.lat);
+        self.ne.lng = self.ne.lng.max(coordinates.lng);
+        self.ne.lat = self.ne.lat.max(coordinates.lat);
     }
 
     pub fn merge(&mut self, other: &LngLatBounds) {
         self.sw.lng = self.sw.lng.min(other.sw.lng);
         self.sw.lat = self.sw.lat.min(other.sw.lat);
-        self.ne.lng = self.ne.lng.min(other.ne.lng);
-        self.ne.lat = self.ne.lat.min(other.ne.lat);
+        self.ne.lng = self.ne.lng.max(other.ne.lng);
+        self.ne.lat = self.ne.lat.max(other.ne.lat);
     }
 }