diff --git a/CHANGELOG.md b/CHANGELOG.md
index 16e3f08..1ebd951 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Fixed
+
+* Fixed error message when providing an invalid longitude
+
 ## [1.0.0] - 2022-01-19
 
 Initial release
diff --git a/src/Geohash.php b/src/Geohash.php
index bac8789..87b7c3d 100644
--- a/src/Geohash.php
+++ b/src/Geohash.php
@@ -34,7 +34,7 @@ public static function encode(float $lat, float $lon, ?int $precision = null): s
         }
 
         if ($lon < $lonMin || $lon > $lonMax) {
-            throw new InvalidArgumentException("The longitude must be between $latMin and $latMax");
+            throw new InvalidArgumentException("The longitude must be between $lonMin and $lonMax");
         }
 
         if (($precision !== null) && ($precision < $precisionMin || $precision > $precisionMax)) {