diff --git a/slick.grid.js b/slick.grid.js
index 279019d9a..2c1b3eb9b 100644
--- a/slick.grid.js
+++ b/slick.grid.js
@@ -396,9 +396,10 @@ if (typeof Slick === "undefined") {
         $canvas.width(canvasWidth);
         $headerRow.width(canvasWidth);
         $headers.width(getHeadersWidth());
-        viewportHasHScroll = (canvasWidth > viewportW - scrollbarDimensions.width);
       }
 
+      viewportHasHScroll = (canvasWidth > viewportW - scrollbarDimensions.width);
+
       $headerRowSpacer.width(canvasWidth + (viewportHasVScroll ? scrollbarDimensions.width : 0));
 
       if (canvasWidth != oldCanvasWidth || forceColumnWidthsUpdate) {