diff --git a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt
index 982476466..67b22be3f 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt
@@ -194,7 +194,7 @@ class BookSourceViewModel(application: Application) : BaseViewModel(application)
                 else -> "格式不对"
             }
         }.onError {
-            finally(it.localizedMessage)
+            finally(it.localizedMessage ?: "")
         }.onSuccess {
             finally(it ?: "导入完成")
         }