diff --git a/app/src/main/java/io/legado/app/data/entities/SearchShow.kt b/app/src/main/java/io/legado/app/data/entities/SearchShow.kt
index faa7c3575..a0e24316a 100644
--- a/app/src/main/java/io/legado/app/data/entities/SearchShow.kt
+++ b/app/src/main/java/io/legado/app/data/entities/SearchShow.kt
@@ -13,7 +13,5 @@ data class SearchShow(
 ) : BaseBook {
     override var variableMap: HashMap<String, String>? = null
 
-    override fun putVariable(key: String, value: String) {
-
-    }
+    override fun putVariable(key: String, value: String) = Unit
 }
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