diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/RuleAnalyzer.kt b/app/src/main/java/io/legado/app/model/analyzeRule/RuleAnalyzer.kt
index a6019cc2c..ebc07b6b6 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/RuleAnalyzer.kt
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/RuleAnalyzer.kt
@@ -323,10 +323,7 @@ class RuleAnalyzer(data: String, code: Boolean = false) {
             val next = if (queue[pos] == '[') ']' else ')' //平衡组末尾字符
 
             if (!chompBalanced(queue[pos], next)) throw Error(
-                queue.substring(
-                    0,
-                    start
-                ) + "后未平衡"
+                queue.substring(0, start) + "后未平衡"
             ) //拉出一个筛选器,不平衡则报错
 
         } while (end > pos)