diff --git a/src/src/UI/Widget/Thumbnail/thumbnailImage.cpp b/src/src/UI/Widget/Thumbnail/thumbnailImage.cpp
index c9090d9..5dd30ed 100644
--- a/src/src/UI/Widget/Thumbnail/thumbnailImage.cpp
+++ b/src/src/UI/Widget/Thumbnail/thumbnailImage.cpp
@@ -139,7 +139,7 @@ void thumbnailImage::drawThumbnail() {
     QImage image( (uchar*)m_Data, seriesProperty->GetColumns(), seriesProperty->GetRows(),
                  sample == 1 ? QImage::Format_Grayscale8 : QImage::Format_RGB888);//使用8位深度的灰度图做输出
     image = image.scaledToHeight(100);
-    if (image.width() > 100) image.scaledToWidth(100);
+    if (image.width() > 100) image=image.scaledToWidth(100);
     QPixmap pixmap(100, 100);
     pixmap.fill(Qt::black);
     QPainter p(&pixmap);