diff --git a/agb/examples/affine_background.rs b/agb/examples/affine_background.rs
index 5ac2e289..2e336b13 100644
--- a/agb/examples/affine_background.rs
+++ b/agb/examples/affine_background.rs
@@ -6,7 +6,7 @@ use agb::{
         tiled::{AffineBackgroundSize, TileFormat, TileSet, TiledMap},
         Priority,
     },
-    fixnum::num,
+    fixnum::{num, Num},
     include_gfx,
     input::Tri,
 };
@@ -33,7 +33,7 @@ fn main(mut gba: agb::Gba) -> ! {
     bg.commit(&mut vram);
     bg.show();
 
-    let mut rotation = num!(0.);
+    let mut rotation: Num<u16, 8> = num!(0.);
     let rotation_increase = num!(1.);
 
     let mut input = agb::input::ButtonController::new();
@@ -56,10 +56,12 @@ fn main(mut gba: agb::Gba) -> ! {
             _ => {}
         }
 
+        bg.set_scroll_pos((16 * 4, 16 * 4).into());
+        let scroll_pos = (scroll_x as i16, scroll_y as i16);
         bg.set_transform(
-            (-scroll_x as i16, -scroll_y as i16).into(),
-            (1, 1).into(),
-            rotation,
+            scroll_pos,
+            (1, 1),
+             rotation,
         );
 
         rotation += rotation_increase;
diff --git a/agb/src/display/tiled/map.rs b/agb/src/display/tiled/map.rs
index 7af1f57b..45b09646 100644
--- a/agb/src/display/tiled/map.rs
+++ b/agb/src/display/tiled/map.rs
@@ -284,10 +284,10 @@ impl TiledMapPrivate for AffineMap {
         &mut self.bg_center.y
     }
     fn x_scroll(&self) -> Self::Position {
-        self.bg_center.x
+        self.bg_center.x + self.transform.position.x
     }
     fn y_scroll(&self) -> Self::Position {
-        self.bg_center.y
+        self.bg_center.y + self.transform.position.y
     }
     fn affine_matrix(&self) -> Self::AffineMatrix {
         self.transform.matrix
@@ -375,15 +375,15 @@ impl AffineMap {
 
     pub fn set_transform(
         &mut self,
-        display_center: Vector2D<i16>,
-        scale: Vector2D<Num<i16, 8>>,
-        rotation: Num<u16, 8>,
+        display_center: impl Into<Vector2D<i16>>,
+        scale: impl Into<Vector2D<Num<i16, 8>>>,
+        rotation: impl Into<Num<u16, 8>>,
     ) {
         self.set_transform_raw(crate::syscall::bg_affine_matrix(
             self.bg_center,
-            display_center,
-            scale,
-            rotation,
+            display_center.into(),
+            scale.into(),
+            rotation.into(),
         ));
     }
 }