diff --git a/Dai-Hentai/Models/Couchbase/DBGallery.m b/Dai-Hentai/Models/Couchbase/DBGallery.m
index 4636ce4a..5b193dbf 100644
--- a/Dai-Hentai/Models/Couchbase/DBGallery.m
+++ b/Dai-Hentai/Models/Couchbase/DBGallery.m
@@ -217,6 +217,7 @@ + (void)deleteAllHistories:(void (^)(NSInteger total, NSInteger index, HentaiInf
                     [document purgeDocument:nil];
                 });
             }
+            [NSThread sleepForTimeInterval:0.5f];
         }
         dispatch_async(dispatch_get_main_queue(), ^{
             if (finish) {