diff --git a/src/virt-viewer-display-spice.c b/src/virt-viewer-display-spice.c
index 311178b..a82422c 100644
--- a/src/virt-viewer-display-spice.c
+++ b/src/virt-viewer-display-spice.c
@@ -363,6 +363,12 @@ virt_viewer_display_spice_set_desktop(VirtViewerDisplay *display,
 {
     VirtViewerDisplaySpicePrivate *priv;
     guint desktopWidth, desktopHeight;
+    gint scale_factor = gtk_widget_get_scale_factor(GTK_WIDGET(display));
+
+    /* parameter width and height are guest monitor physical pixel sizes */
+    /* convert to application pixel sizes */
+    width /= scale_factor;
+    height /= scale_factor;
 
     g_return_if_fail(VIRT_VIEWER_IS_DISPLAY_SPICE(display));
 
diff --git a/src/virt-viewer-display.c b/src/virt-viewer-display.c
index de72353..bc2c2a6 100644
--- a/src/virt-viewer-display.c
+++ b/src/virt-viewer-display.c
@@ -721,6 +721,14 @@ void virt_viewer_display_get_preferred_monitor_geometry(VirtViewerDisplay* self,
         preferred->width = round(preferred->width * NORMAL_ZOOM_LEVEL / (double) zoom);
         preferred->height = round(preferred->height * NORMAL_ZOOM_LEVEL / (double) zoom);
     }
+
+    /* calculate device pixel size on HiDPI screens */
+    gint scale_factor = gtk_widget_get_scale_factor(GTK_WIDGET(self));
+
+    preferred->x *= scale_factor;
+    preferred->y *= scale_factor;
+    preferred->width *= scale_factor;
+    preferred->height *= scale_factor;
 }
 
 gint