diff --git a/app/src/main/java/io/legado/app/help/SourceHelp.kt b/app/src/main/java/io/legado/app/help/SourceHelp.kt
index 14f06c55c..cfc3f3b10 100644
--- a/app/src/main/java/io/legado/app/help/SourceHelp.kt
+++ b/app/src/main/java/io/legado/app/help/SourceHelp.kt
@@ -11,11 +11,11 @@ import org.jetbrains.anko.toast
 object SourceHelp {
 
     private val handler = Handler(Looper.getMainLooper())
-    private val list18Plus: Array<String> by lazy {
+    private val list18Plus by lazy {
         try {
             String(App.INSTANCE.assets.open("18PlusList.txt").readBytes()).splitNotBlank("\n")
         } catch (e: Exception) {
-            arrayOf()
+            arrayOf<String>()
         }
     }