diff --git a/aws/resource_aws_db_instance.go b/aws/resource_aws_db_instance.go
index 762066309ec..e48cc00f692 100644
--- a/aws/resource_aws_db_instance.go
+++ b/aws/resource_aws_db_instance.go
@@ -1149,7 +1149,7 @@ func resourceAwsDbInstanceCreate(d *schema.ResourceData, meta interface{}) error
 				input.StorageType = aws.String(v.(string))
 			}
 
-			if v, ok := d.GetOk("subnet_group_name"); ok {
+			if v, ok := d.GetOk("db_subnet_group_name"); ok {
 				input.DBSubnetGroupName = aws.String(v.(string))
 			}