diff --git a/ui/qt/packet_list.cpp b/ui/qt/packet_list.cpp
index e75cb8b7a5..bc0e674897 100644
--- a/ui/qt/packet_list.cpp
+++ b/ui/qt/packet_list.cpp
@@ -1636,8 +1636,7 @@ void PacketList::drawNearOverlay()
 
     if (!prefs.gui_packet_list_show_minimap) return;
 
-    qreal dp_ratio = 1.0;
-    dp_ratio = overlay_sb_->devicePixelRatio();
+    qreal dp_ratio = overlay_sb_->devicePixelRatio();
     int o_height = overlay_sb_->height() * dp_ratio;
     int o_rows = qMin(packet_list_model_->rowCount(), o_height);
     int o_width = (wsApp->fontMetrics().height() * 2 * dp_ratio) + 2; // 2ems + 1-pixel border on either side.
@@ -1706,8 +1705,7 @@ void PacketList::drawFarOverlay()
     if (!prefs.gui_packet_list_show_minimap) return;
 
     QSize groove_size = overlay_sb_->grooveRect().size();
-    qreal dp_ratio = 1.0;
-    dp_ratio = overlay_sb_->devicePixelRatio();
+    qreal dp_ratio = overlay_sb_->devicePixelRatio();
     groove_size *= dp_ratio;
     int o_width = groove_size.width();
     int o_height = groove_size.height();
diff --git a/ui/qt/widgets/overlay_scroll_bar.cpp b/ui/qt/widgets/overlay_scroll_bar.cpp
index 2c700d4f63..e6ff1b8b1d 100644
--- a/ui/qt/widgets/overlay_scroll_bar.cpp
+++ b/ui/qt/widgets/overlay_scroll_bar.cpp
@@ -105,8 +105,7 @@ void OverlayScrollBar::setNearOverlayImage(QImage &overlay_image, int packet_cou
     selected_pos_ = selected_pos;
 
     if (old_width != packet_map_img_.width()) {
-        qreal dp_ratio = 1.0;
-        dp_ratio = devicePixelRatio();
+        qreal dp_ratio = devicePixelRatio();
 
         packet_map_width_ = packet_map_img_.width() / dp_ratio;
 
@@ -117,8 +116,7 @@ void OverlayScrollBar::setNearOverlayImage(QImage &overlay_image, int packet_cou
 
 void OverlayScrollBar::setMarkedPacketImage(QImage &mp_image)
 {
-    qreal dp_ratio = 1.0;
-    dp_ratio = devicePixelRatio();
+    qreal dp_ratio = devicePixelRatio();
 
     marked_packet_img_ = mp_image;
     marked_packet_width_ = mp_image.width() / dp_ratio;
@@ -146,9 +144,8 @@ void OverlayScrollBar::resizeEvent(QResizeEvent *event)
 
 void OverlayScrollBar::paintEvent(QPaintEvent *event)
 {
-    qreal dp_ratio = 1.0;
+    qreal dp_ratio = devicePixelRatio();
     QSize pm_size(packet_map_width_, geometry().height());
-    dp_ratio = devicePixelRatio();
     pm_size *= dp_ratio;
 
     QPainter painter(this);
@@ -200,8 +197,7 @@ bool OverlayScrollBar::eventFilter(QObject *watched, QEvent *event)
 
         if (!marked_packet_img_.isNull()) {
             QRect groove_rect = grooveRect();
-            qreal dp_ratio = 1.0;
-            dp_ratio = devicePixelRatio();
+            qreal dp_ratio = devicePixelRatio();
             groove_rect.setTopLeft(groove_rect.topLeft() * dp_ratio);
             groove_rect.setSize(groove_rect.size() * dp_ratio);