Index: src/Element.cpp
--- a/src/Element.cpp.orig
+++ b/src/Element.cpp
@@ -279,7 +279,13 @@ CBackgroundElement::CBackgroundElement(short initx, sh
 
 void	CBackgroundElement::OnAllocate()
 {
-	short	params[5] = {-1, xs, ys, xe - xs, ye - ys};
+	short	params[5] = {
+		-1,
+		static_cast<short>(xs),
+		static_cast<short>(ys),
+		static_cast<short>(xe - xs),
+		static_cast<short>(ye - ys)
+	};
 	unsigned char *tmpBmp;
 
 	tmpBmp = gShapeManager->GetBackground(params[1], params[2]);