diff --git a/app/scanner2/HGImgThumb.cpp b/app/scanner2/HGImgThumb.cpp
index dcd024bc..fb97b042 100644
--- a/app/scanner2/HGImgThumb.cpp
+++ b/app/scanner2/HGImgThumb.cpp
@@ -4727,7 +4727,7 @@ QRect HGImgThumb::getNullScrollPos()
 
 void HGImgThumb::Show()
 {
-    repaint();
+    update();
 }
 
 void HGAPI HGImgThumb::ThreadFunc(HGThread thread, HGPointer param)
diff --git a/app/scanner2/HGImgView.cpp b/app/scanner2/HGImgView.cpp
index e704de97..afe56b8f 100644
--- a/app/scanner2/HGImgView.cpp
+++ b/app/scanner2/HGImgView.cpp
@@ -2497,5 +2497,5 @@ QRect HGImgView::getNullScrollPos()
 
 void HGImgView::Show()
 {
-    repaint();
+    update();
 }
diff --git a/modules/twainui/HGImgView.cpp b/modules/twainui/HGImgView.cpp
index e704de97..afe56b8f 100644
--- a/modules/twainui/HGImgView.cpp
+++ b/modules/twainui/HGImgView.cpp
@@ -2497,5 +2497,5 @@ QRect HGImgView::getNullScrollPos()
 
 void HGImgView::Show()
 {
-    repaint();
+    update();
 }