diff --git a/app/src/main/java/io/legado/app/help/coroutine/Coroutine.kt b/app/src/main/java/io/legado/app/help/coroutine/Coroutine.kt
index f337b30f7..a0c64eb43 100644
--- a/app/src/main/java/io/legado/app/help/coroutine/Coroutine.kt
+++ b/app/src/main/java/io/legado/app/help/coroutine/Coroutine.kt
@@ -2,7 +2,7 @@ package io.legado.app.help.coroutine
 
 import kotlinx.coroutines.*
 
-class Coroutine<T>(private val scope: CoroutineScope, private val block: suspend CoroutineScope.() -> T) {
+class Coroutine<T>(private val scope: CoroutineScope, block: suspend CoroutineScope.() -> T) {
 
     companion object {
 
diff --git a/app/src/main/java/io/legado/app/model/WebBook.kt b/app/src/main/java/io/legado/app/model/WebBook.kt
index 1c5bae931..7fb067215 100644
--- a/app/src/main/java/io/legado/app/model/WebBook.kt
+++ b/app/src/main/java/io/legado/app/model/WebBook.kt
@@ -31,7 +31,7 @@ class WebBook(private val bookSource: BookSource) {
                 }
                 return@launch BookList.analyzeBookList(response, bookSource, analyzeUrl)
             }
-            return@launch mutableListOf()
+            return@launch arrayListOf<SearchBook>()
         }
     }