diff --git a/migrations/2405270217_create_invite_code_table.up.sql b/migrations/2405270217_create_invite_code_table.up.sql
index 6d47ea5..7b85a25 100644
--- a/migrations/2405270217_create_invite_code_table.up.sql
+++ b/migrations/2405270217_create_invite_code_table.up.sql
@@ -1,5 +1,5 @@
 CREATE TABLE group_invite_code (
-  group_id uuid NOT NULL,
+  group_id uuid NOT NULL UNIQUE,
   invite_code varchar(10) PRIMARY KEY ,
   created_at timestamp default CURRENT_TIMESTAMP,
   FOREIGN KEY (group_id) REFERENCES "group"(group_id)
diff --git a/migrations/2406201209_inv_code_gid_unique.down.sql b/migrations/2406201209_inv_code_gid_unique.down.sql
deleted file mode 100644
index 40dea5d..0000000
--- a/migrations/2406201209_inv_code_gid_unique.down.sql
+++ /dev/null
@@ -1 +0,0 @@
-ALTER TABLE group_invite_code DROP CONSTRAINT group_id_unique;
\ No newline at end of file
diff --git a/migrations/2406201209_inv_code_gid_unique.up.sql b/migrations/2406201209_inv_code_gid_unique.up.sql
deleted file mode 100644
index cf41d71..0000000
--- a/migrations/2406201209_inv_code_gid_unique.up.sql
+++ /dev/null
@@ -1 +0,0 @@
-ALTER TABLE group_invite_code ADD CONSTRAINT group_id_unique UNIQUE (group_id);
\ No newline at end of file