diff --git a/src/window/vip/world.rs b/src/window/vip/world.rs
index dcf24bd..931c78f 100644
--- a/src/window/vip/world.rs
+++ b/src/window/vip/world.rs
@@ -1081,8 +1081,8 @@ impl<'a> SourceCoordCalculator<'a> {
                 (sx, sy)
             }
             SourceParam::Affine(affine) => {
-                let sx = affine_coord(affine.src_x, x, affine.dx, affine.src_parallax.min(0));
-                let sy = affine_coord(affine.src_y, x, affine.dy, affine.src_parallax.min(0));
+                let sx = affine_coord(affine.src_x, x, affine.dx, -(affine.src_parallax.min(0)));
+                let sy = affine_coord(affine.src_y, x, affine.dy, -(affine.src_parallax.min(0)));
                 (sx, sy)
             }
         }