diff --git a/desktop_version/src/Graphics.cpp b/desktop_version/src/Graphics.cpp
index 814af1d5..0ed1c4f2 100644
--- a/desktop_version/src/Graphics.cpp
+++ b/desktop_version/src/Graphics.cpp
@@ -1048,7 +1048,9 @@ void Graphics::drawgui(void)
             TextboxSprite* sprite = &textboxes[i].sprites[index];
             int y = sprite->y + yp;
             SDL_Color color = getcol(sprite->col);
-            color.a = opacity * 255;
+            color.r *= opacity;
+            color.g *= opacity;
+            color.b *= opacity;
 
             if (flipmode)
             {