diff --git a/main.tf b/main.tf
index ca6ea16..c80e1ef 100644
--- a/main.tf
+++ b/main.tf
@@ -20,13 +20,13 @@ resource "snowflake_grant_database_role" "parent_database_role" {
   count = module.this.enabled && var.parent_database_role != null ? 1 : 0
 
   database_role_name        = local.database_role_name
-  parent_database_role_name = var.parent_database_role
+  parent_database_role_name = "${one(snowflake_database_role.this[*].database)}.${var.parent_database_role}"
 }
 
 resource "snowflake_grant_database_role" "granted_database_roles" {
   for_each = toset(module.this.enabled ? var.granted_database_roles : [])
 
-  database_role_name        = each.value
+  database_role_name        = each.value != null ? "${one(snowflake_database_role.this[*].database)}.${each.value}" : null
   parent_database_role_name = local.database_role_name
 }