diff --git a/Misc/Util.cs b/Misc/Util.cs
index bd0c00938..a773efe7c 100644
--- a/Misc/Util.cs
+++ b/Misc/Util.cs
@@ -13,6 +13,7 @@ public static Image layerImage(Image baseLayer, Image overLayer, int x, int y, d
         {
             Bitmap overlayImage = (Bitmap)overLayer;
             Bitmap newImage = (Bitmap)baseLayer;
+            if (baseLayer == null) return overLayer;
             for (int i = 0; i < (overlayImage.Width * overlayImage.Height); i++)
             {
                 Color newColor = overlayImage.GetPixel(i % (overlayImage.Width), i / (overlayImage.Width));