diff --git a/src/main/java/cn/lihongjie/coal/file/service/FileService.java b/src/main/java/cn/lihongjie/coal/file/service/FileService.java
index ab08f11a..8649c513 100644
--- a/src/main/java/cn/lihongjie/coal/file/service/FileService.java
+++ b/src/main/java/cn/lihongjie/coal/file/service/FileService.java
@@ -108,7 +108,7 @@ public class FileService extends BaseService<FileEntity, FileRepository> {
                                 Ctx.currentUser().getOrganizationId(),
                                 StringUtils.defaultIfBlank(dir, "public")));
         InputStream inputStream = file.getInputStream();
-        fileEntity.setObjectId(UUID.randomUUID() + "." + FilenameUtils.getExtension(name));
+        fileEntity.setObjectId(UUID.randomUUID() + "." + FilenameUtils.getExtension(name.replace(":", "_")));
         try (inputStream) {
             fileEntity.setMimeType(tika.detect(inputStream));
         }