diff --git a/YACReaderLibrary/db/comic_model.cpp b/YACReaderLibrary/db/comic_model.cpp
index a50cc7b1..7fee8000 100644
--- a/YACReaderLibrary/db/comic_model.cpp
+++ b/YACReaderLibrary/db/comic_model.cpp
@@ -798,7 +798,7 @@ QVector<YACReaderComicReadStatus> ComicModel::setComicsRead(QList<QModelIndex> l
                 c.info.read = false;
                 c.info.currentPage = 1;
                 c.info.hasBeenOpened = false;
-                c.info.lastTimeOpened.setValue(nullptr);
+                c.info.lastTimeOpened.setValue(QVariant());
                 DBHelper::update(&(c.info), db);
             }
         }