diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7e2f85b..b476eea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # CHANGELOG
 
+## 0.4.1
+- fixed isGeoPointInBoundingBox typos & logic
+
 ## 0.4.0
 - added dart 3 compatible changes
 - revised test cases
diff --git a/README.md b/README.md
index 1e9f7fc..06d6080 100644
--- a/README.md
+++ b/README.md
@@ -90,12 +90,12 @@ Convert degrees to radians
 num degrees = radiansToDegrees(latRadians);
 ```
 
-### isGeoPointInBoudingBox(LatLng l, LatLng topLeft, LatLng bottomRight)
+### isGeoPointInBoundingBox(LatLng l, LatLng topLeft, LatLng bottomRight)
 
-Check if a given geo point is in the bouding box
+Check if a given geo point is in the bounding box
 
 ```dart
-bool inBoudingBox = geodesy.isGeoPointInBoudingBox(l1, l2, l3);
+bool inBoundingBox = geodesy.isGeoPointInBoundingBox(l1, l2, l3);
 ```
 
 ### intersectionByPaths(LatLng l1, LatLng l2, num b1, num b2)
diff --git a/example/main.dart b/example/main.dart
index c47c19b..3b55bd6 100644
--- a/example/main.dart
+++ b/example/main.dart
@@ -33,8 +33,8 @@ void main() async {
   print('[midPointBetweenTwoGeoPoints] Midpoint Lng: ' +
       midpoint.longitude.toString());
 
-  var inBoudingBox = geodesy.isGeoPointInBoudingBox(l3, l5, l4);
-  print('[isGeoPointInBoudingBox]: ' + inBoudingBox.toString());
+  var inBoundingBox = geodesy.isGeoPointInBoundingBox(l3, l5, l4);
+  print('[isGeoPointInBoundingBox]: ' + inBoundingBox.toString());
 
   num b1 = 108.547;
   num b2 = 32.435;
diff --git a/lib/src/geodesy.dart b/lib/src/geodesy.dart
index 98ef77a..0d4a907 100644
--- a/lib/src/geodesy.dart
+++ b/lib/src/geodesy.dart
@@ -173,10 +173,10 @@ class Geodesy {
     return x * R;
   }
 
-  /// check if a given geo point is in the bouding box
-  bool isGeoPointInBoudingBox(LatLng l, LatLng topLeft, LatLng bottomRight) {
-    return topLeft.latitude <= l.latitude &&
-            l.latitude <= bottomRight.latitude &&
+  /// check if a given geo point is in the bounding box
+  bool isGeoPointInBoundingBox(LatLng l, LatLng topLeft, LatLng bottomRight) {
+    return bottomRight.latitude <= l.latitude &&
+            l.latitude <= topLeft.latitude &&
             topLeft.longitude <= l.longitude &&
             l.longitude <= bottomRight.longitude
         ? true
diff --git a/pubspec.yaml b/pubspec.yaml
index 2f8f7e6..681c103 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: geodesy
 description: A Dart library for geodesic and trigonometric calculations working with points and paths
-version: 0.4.0
+version: 0.4.1
 homepage: https://github.com/wingkwong/geodesy
 
 environment:
diff --git a/test/geodesy_test.dart b/test/geodesy_test.dart
index c7b3402..fe33287 100644
--- a/test/geodesy_test.dart
+++ b/test/geodesy_test.dart
@@ -44,12 +44,12 @@ void main() {
     expect(midpoint.toString(), expectedMidpoint.toString());
   });
 
-  test('isGeoPointInBoudingBox', () async {
+  test('isGeoPointInBoundingBox', () async {
     final l3 = const LatLng(51.4778, -0.0015);
     final l4 = const LatLng(52.205, 0.119);
     final l5 = const LatLng(48.857, 2.351);
-    final inBoudingBox = geodesy.isGeoPointInBoudingBox(l3, l5, l4);
-    expect(inBoudingBox, false);
+    final inBoundingBox = geodesy.isGeoPointInBoundingBox(l3, l5, l4);
+    expect(inBoundingBox, false);
   });
 
   test('intersectionByPaths', () async {