X-Git-Url: https://code.delx.au/refind/blobdiff_plain/c8883302f06e69a8b961280b73e29b4b09cacb9d..4944145c8979880d164195efcd9dae809c5bbf7e:/refind/menu.c

diff --git a/refind/menu.c b/refind/menu.c
index e55bcf4..55511be 100644
--- a/refind/menu.c
+++ b/refind/menu.c
@@ -761,12 +761,13 @@ static UINT8 AverageBrightness(EG_IMAGE *Image) {
    UINTN i;
    UINTN Sum = 0;
 
-   if (Image != NULL) {
+   if ((Image != NULL) && ((Image->Width * Image->Height) != 0)) {
       for (i = 0; i < (Image->Width * Image->Height); i++) {
          Sum += (Image->PixelData[i].r + Image->PixelData[i].g + Image->PixelData[i].b);
       }
+      Sum /= (Image->Width * Image->Height * 3);
    } // if
-   return (UINT8) (Sum / (Image->Width * Image->Height * 3));
+   return (UINT8) Sum;
 } // UINT8 AverageBrightness()
 
 // Display text against the screen's background image. Special case: If Text is NULL