diff --git a/debian/patches/pveui.patch b/debian/patches/pveui.patch
index b613d98..b82ce35 100644
--- a/debian/patches/pveui.patch
+++ b/debian/patches/pveui.patch
@@ -793,7 +793,7 @@ index cb5717c..ceaa4fc 100644
 +		// Note1: CSS Canvas size is wrong by a few pixels in Chrome
 +		// Note2: window size must be even number for firefox
 +		UI.lastFBWidth = Math.floor((width + 1)/2)*2;;
-+		UI.lastFBHeight = Math.floor((height)/2)*2;
++		UI.lastFBHeight = Math.floor((height + 1)/2)*2;
 +
 +		if (UI.sizeUpdateTimer !== undefined) {
 +		    clearInterval(UI.sizeUpdateTimer);