diff --git a/app/src/main/java/io/legado/app/service/CheckSourceService.kt b/app/src/main/java/io/legado/app/service/CheckSourceService.kt
index 223e235a8..80ab69ba7 100644
--- a/app/src/main/java/io/legado/app/service/CheckSourceService.kt
+++ b/app/src/main/java/io/legado/app/service/CheckSourceService.kt
@@ -164,7 +164,7 @@ class CheckSourceService : BaseService() {
                         }
                     } else {
                         source.removeGroup("发现失效")
-                        books = exploreBooks
+                        if (books.isEmpty()) books = exploreBooks
                     }
                 }
             }