diff --git a/arm9/src/gdrv.cpp b/arm9/src/gdrv.cpp
index 1d988ff..78ad9c3 100644
--- a/arm9/src/gdrv.cpp
+++ b/arm9/src/gdrv.cpp
@@ -88,13 +88,13 @@ void gdrv_bitmap8::ScaleIndexed(float scaleX, float scaleY)
 		return;
 
 	auto newIndBuf = new char[newHeight * newWidht];
-	for (int y = 0; y < Height; y++)
+	for (int dst=0, y = 0; y < newHeight; y++)
 	{
-		for (int x = 0; x < Width; x++)
+		for (int x = 0; x < newWidht; x++, dst++)
 		{
-			int smallX = static_cast<int>(static_cast<float>(x) / Width * newWidht);
-			int smallY = static_cast<int>(static_cast<float>(y) / Height * newHeight);
-			newIndBuf[smallY * newWidht + smallX] = IndexedBmpPtr[(y * IndexedStride) + x];
+			auto px = static_cast<int>(x / scaleX);
+			auto py = static_cast<int>(y / scaleY);
+			newIndBuf[dst] = IndexedBmpPtr[(py * IndexedStride) + px];
 		}
 	}