diff --git a/meilisearch_test.go b/meilisearch_test.go
index 6983da2..94c5beb 100644
--- a/meilisearch_test.go
+++ b/meilisearch_test.go
@@ -2241,7 +2241,8 @@ func Test_ListIndex(t *testing.T) {
 
 			for _, idx := range tt.Indexes {
 				info, err := c.CreateIndex(&IndexConfig{
-					Uid: idx,
+					Uid:        idx,
+					PrimaryKey: "id", // Adding a default primary key
 				})
 				if tt.WantErr {
 					require.Error(t, err)