diff --git a/ladybug/location.py b/ladybug/location.py
index 2362f400..69ed15a5 100644
--- a/ladybug/location.py
+++ b/ladybug/location.py
@@ -157,8 +157,9 @@ def meridian(self):
 
     def duplicate(self):
         """Duplicate location."""
-        return self(self.city, self.country, self.latitude, self.longitude,
-                    self.time_zone, self.elevation, self.station_id, self.source)
+        return Location(self.city, self.state, self.country,
+                        self.latitude, self.longitude, self.time_zone, self.elevation,
+                        self.station_id, self.source)
 
     @property
     def ep_style_location_string(self):
diff --git a/tests/location_test.py b/tests/location_test.py
index 47a9f1c9..3b46cc7a 100644
--- a/tests/location_test.py
+++ b/tests/location_test.py
@@ -121,6 +121,27 @@ def test_json_methods(self):
         assert loc_from_json.elevation == elevation
         assert loc_from_json.country == country
 
+    def test_duplicate(self):
+        """Test the duplicate method."""
+        city = 'Tehran'
+        country = 'Iran'
+        latitude = 36
+        longitude = 34
+        time_zone = 3.5
+        elevation = 54
+
+        loc = Location(city=city, country=country, latitude=latitude,
+                       longitude=longitude, time_zone=time_zone,
+                       elevation=elevation)
+        loc_dup = loc.duplicate()
+
+        assert loc.city == loc_dup.city == city
+        assert loc.country == loc_dup.country == country
+        assert loc.latitude == loc_dup.latitude == latitude
+        assert loc.longitude == loc_dup.longitude == longitude
+        assert loc.time_zone == loc_dup.time_zone == time_zone
+        assert loc.elevation == loc_dup.elevation == elevation
+
 
 if __name__ == "__main__":
     unittest.main()