diff --git a/server/App/Controller/GroupsController.php b/server/App/Controller/GroupsController.php
index 4c19d79..21bba4f 100644
--- a/server/App/Controller/GroupsController.php
+++ b/server/App/Controller/GroupsController.php
@@ -44,7 +44,23 @@
 	}
 
 	public function remove() {
+		$session = get_current_session();
+		list($group_id) = get_expected_vars($_GET, ["group_id"]);
+		$group_id = intval($group_id);
 
+		$group = new Group();
+		if(!$group -> init_by_id($group_id)) {
+			return error_response("group_remove", "Invalid group_id");
+		}
+
+		if(!$group -> remove()) {
+			return error_response("group_remove", "Something wrong");
+		}
+
+		$groups_model = new Groups();
+		$groups_model -> normalizing_groups_position($session -> user_id);
+
+		return success_response();
 	}
 
 	public function change_position() {
diff --git a/server/App/Models/Groups.php b/server/App/Models/Groups.php
index 5b8f249..f69911f 100644
--- a/server/App/Models/Groups.php
+++ b/server/App/Models/Groups.php
@@ -52,7 +52,6 @@
 	}
 
 	public function change_group_position(int $group_id, int $new_position) :bool {
-		$tablename = Group::get_tablename();
 		$session = get_current_session();
 		$groups = $session -> user() -> get_groups();
 
@@ -75,12 +74,12 @@
 			}
 
 			if ($new_position > $current_position) {
-				if ($group->position > $current_position && $group->position <= $new_position) {
-					$group->position--;
+				if ($group -> position > $current_position && $group -> position <= $new_position) {
+					$group -> position--;
 				}
 			} else {
-				if ($group->position < $current_position && $group->position >= $new_position) {
-					$group->position++;
+				if ($group -> position < $current_position && $group -> position >= $new_position) {
+					$group -> position++;
 				}
 			}
 		}
@@ -91,4 +90,19 @@
 
 		return true;
 	}
+
+	public function normalizing_groups_position(int $user_id) :bool {
+		$session = get_current_session();
+		$groups = $session -> user() -> get_groups();
+
+		foreach ($groups as $i => $group) {
+			$group -> position = $i + 1;
+		}
+
+		array_map(function($group){
+			$group -> update();
+		}, $groups);
+
+		return true;
+	}
 }
\ No newline at end of file
diff --git a/server/App/routes_map.php b/server/App/routes_map.php
index 1e0f138..27463f9 100755
--- a/server/App/routes_map.php
+++ b/server/App/routes_map.php
@@ -43,6 +43,11 @@
 		$groups_controller = new GroupsController();
 		return $groups_controller -> change_position();
 	});
+
+	$router -> linking("GET", "groups-remove", function(){
+		$groups_controller = new GroupsController();
+		return $groups_controller -> remove();
+	});
 }
 
 function init_routes_map($router) {