diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
index 433be384d..420dade60 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
@@ -64,7 +64,6 @@ class AnalyzeRule(
     private var analyzeByJSonPath: AnalyzeByJSonPath? = null
 
     private val stringRuleCache = hashMapOf<String, List<SourceRule>>()
-    private val regexCache = hashMapOf<String, Regex?>()
 
     private var coroutineContext: CoroutineContext = EmptyCoroutineContext