diff --git a/lib/mobilizon_web/resolvers/group.ex b/lib/mobilizon_web/resolvers/group.ex
index 8a045c590..b063691ae 100644
--- a/lib/mobilizon_web/resolvers/group.ex
+++ b/lib/mobilizon_web/resolvers/group.ex
@@ -98,7 +98,7 @@ defmodule MobilizonWeb.Resolvers.Group do
         {:error, "Actor id is not a member of this group"}
 
       {:is_admin, false} ->
-        {:error, "User is not an administrator of the selected group"}
+        {:error, "Actor id is not an administrator of the selected group"}
     end
   end
 
diff --git a/test/mobilizon_web/resolvers/group_resolver_test.exs b/test/mobilizon_web/resolvers/group_resolver_test.exs
index 6c5557d9f..0a41270d4 100644
--- a/test/mobilizon_web/resolvers/group_resolver_test.exs
+++ b/test/mobilizon_web/resolvers/group_resolver_test.exs
@@ -143,5 +143,96 @@ defmodule MobilizonWeb.Resolvers.GroupResolverTest do
 
       assert hd(json_response(res, 200)["errors"])["message"] =~ "not found"
     end
+
+    test "delete_group/3 should check user authentication", %{conn: conn, actor: actor} do
+      group = insert(:group)
+      insert(:member, parent: group, actor: actor, role: 2)
+
+      mutation = """
+          mutation {
+            deleteGroup(
+              actor_id: #{actor.id},
+              group_id: #{group.id}
+            ) {
+                id
+              }
+            }
+      """
+
+      res =
+        conn
+        |> post("/api", AbsintheHelpers.mutation_skeleton(mutation))
+
+      assert hd(json_response(res, 200)["errors"])["message"] =~ "logged-in"
+    end
+
+    test "delete_group/3 should checks the actor is owned by the user", %{conn: conn, user: user, actor: actor} do
+      group = insert(:group)
+      insert(:member, parent: group, actor: actor, role: 2)
+
+      mutation = """
+          mutation {
+            deleteGroup(
+              actor_id: 159,
+              group_id: #{group.id}
+            ) {
+                id
+              }
+            }
+      """
+
+      res =
+        conn
+        |> auth_conn(user)
+        |> post("/api", AbsintheHelpers.mutation_skeleton(mutation))
+
+      assert hd(json_response(res, 200)["errors"])["message"] =~ "not owned"
+    end
+
+    test "delete_group/3 should checks the actor is a member of this group", %{conn: conn, user: user, actor: actor} do
+      group = insert(:group)
+
+      mutation = """
+          mutation {
+            deleteGroup(
+              actor_id: #{actor.id},
+              group_id: #{group.id}
+            ) {
+                id
+              }
+            }
+      """
+
+      res =
+        conn
+        |> auth_conn(user)
+        |> post("/api", AbsintheHelpers.mutation_skeleton(mutation))
+
+      assert hd(json_response(res, 200)["errors"])["message"] =~ "not a member"
+    end
+
+    test "delete_group/3 should checks the actor is an administrator of this group", %{conn: conn, user: user, actor: actor} do
+      group = insert(:group)
+      insert(:member, parent: group, actor: actor, role: 1)
+
+      mutation = """
+          mutation {
+            deleteGroup(
+              actor_id: #{actor.id},
+              group_id: #{group.id}
+            ) {
+                id
+              }
+            }
+      """
+
+      res =
+        conn
+        |> auth_conn(user)
+        |> post("/api", AbsintheHelpers.mutation_skeleton(mutation))
+
+      assert hd(json_response(res, 200)["errors"])["message"] =~ "not an administrator"
+    end
+
   end
 end