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 92f4d71f1..27b0b209e 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
@@ -470,6 +470,9 @@ class AnalyzeRule(private var book: BaseBook? = null) {
             var tmp: String
             val evalMatcher = evalPattern.matcher(rule)
             while (evalMatcher.find()) {
+                if (mode == Mode.Default) {
+                    mode = Mode.Regex
+                }
                 if (evalMatcher.start() > start) {
                     tmp = rule.substring(start, evalMatcher.start())
                     ruleType.add(0)