diff --git a/migrations/045_wheel_limits_probability_retry.sql b/migrations/045_wheel_limits_probability_retry.sql
index 5e5a077..d53f8d6 100644
--- a/migrations/045_wheel_limits_probability_retry.sql
+++ b/migrations/045_wheel_limits_probability_retry.sql
@@ -84,13 +84,27 @@ PREPARE add_wheel_draw_grant_time_stmt FROM @add_wheel_draw_grant_time_sql;
 EXECUTE add_wheel_draw_grant_time_stmt;
 DEALLOCATE PREPARE add_wheel_draw_grant_time_stmt;
 
+SET @wheel_draw_reward_user_idx_columns := (
+  SELECT GROUP_CONCAT(column_name ORDER BY seq_in_index)
+  FROM information_schema.statistics
+  WHERE table_schema = @current_schema
+    AND table_name = 'wheel_draw_record'
+    AND index_name = 'idx_wheel_draw_reward_user'
+);
+
+SET @drop_wheel_draw_reward_user_idx_sql := IF(
+  @wheel_draw_reward_user_idx_columns IS NOT NULL
+    AND @wheel_draw_reward_user_idx_columns <> 'reward_config_id,user_id,status',
+  'ALTER TABLE `wheel_draw_record` DROP INDEX `idx_wheel_draw_reward_user`',
+  'SELECT 1'
+);
+PREPARE drop_wheel_draw_reward_user_idx_stmt FROM @drop_wheel_draw_reward_user_idx_sql;
+EXECUTE drop_wheel_draw_reward_user_idx_stmt;
+DEALLOCATE PREPARE drop_wheel_draw_reward_user_idx_stmt;
+
 SET @add_wheel_draw_reward_user_idx_sql := IF(
-  NOT EXISTS (
-    SELECT 1 FROM information_schema.statistics
-    WHERE table_schema = @current_schema
-      AND table_name = 'wheel_draw_record'
-      AND index_name = 'idx_wheel_draw_reward_user'
-  ),
+  @wheel_draw_reward_user_idx_columns IS NULL
+    OR @wheel_draw_reward_user_idx_columns <> 'reward_config_id,user_id,status',
   'ALTER TABLE `wheel_draw_record` ADD INDEX `idx_wheel_draw_reward_user` (`reward_config_id`, `user_id`, `status`)',
   'SELECT 1'
 );