diff --git a/app/src/main/kotlin/com/hippo/ehviewer/client/EhUtils.kt b/app/src/main/kotlin/com/hippo/ehviewer/client/EhUtils.kt
index b84eb5dbc..39a5f1dc0 100644
--- a/app/src/main/kotlin/com/hippo/ehviewer/client/EhUtils.kt
+++ b/app/src/main/kotlin/com/hippo/ehviewer/client/EhUtils.kt
@@ -99,7 +99,7 @@ object EhUtils {
     }
 
     fun getCategory(type: Int): String {
-        return CATEGORY_VALUES.getOrDefault(type, CATEGORY_VALUES[UNKNOWN]!!)[0]
+        return CATEGORY_VALUES.getOrDefault(type, CATEGORY_VALUES[UNKNOWN])!![0]
     }
 
     @SuppressLint("RestrictedApi")