diff --git a/src/am_map.cpp b/src/am_map.cpp
index 40a2f8e932..f669b4c904 100644
--- a/src/am_map.cpp
+++ b/src/am_map.cpp
@@ -1461,28 +1461,28 @@ bool AM_clipMline (mline_t *ml, fline_t *fl)
 		{
 			dy = fl->a.y - fl->b.y;
 			dx = fl->b.x - fl->a.x;
-			tmp.x = fl->a.x + (dx*(fl->a.y))/dy;
+			tmp.x = fl->a.x + Scale(dx, fl->a.y, dy);
 			tmp.y = 0;
 		}
 		else if (outside & BOTTOM)
 		{
 			dy = fl->a.y - fl->b.y;
 			dx = fl->b.x - fl->a.x;
-			tmp.x = fl->a.x + (dx*(fl->a.y-f_h))/dy;
+			tmp.x = fl->a.x + Scale(dx, fl->a.y - f_h, dy);
 			tmp.y = f_h-1;
 		}
 		else if (outside & RIGHT)
 		{
 			dy = fl->b.y - fl->a.y;
 			dx = fl->b.x - fl->a.x;
-			tmp.y = fl->a.y + (dy*(f_w-1 - fl->a.x))/dx;
+			tmp.y = fl->a.y + Scale(dy, f_w-1 - fl->a.x, dx);
 			tmp.x = f_w-1;
 		}
 		else if (outside & LEFT)
 		{
 			dy = fl->b.y - fl->a.y;
 			dx = fl->b.x - fl->a.x;
-			tmp.y = fl->a.y + (dy*(-fl->a.x))/dx;
+			tmp.y = fl->a.y + Scale(dy, -fl->a.x, dx);
 			tmp.x = 0;
 		}