diff --git a/maze/src/lib.rs b/maze/src/lib.rs
index 352e3da..0b2caff 100644
--- a/maze/src/lib.rs
+++ b/maze/src/lib.rs
@@ -578,6 +578,7 @@ impl<const X: usize, const Y: usize, const SIZE: usize> BinaryMapVisitor<X, Y, S
 
         bw.push(MazePart::Wall);
         bw.copy(&[MazePart::Wall; X]);
+        bw.copy(&[MazePart::Wall; X]);
 
         let mut top_line = [MazePart::Noop; SIZE];
         let mut bottom_line = [MazePart::Noop; SIZE];
@@ -604,10 +605,8 @@ impl<const X: usize, const Y: usize, const SIZE: usize> BinaryMapVisitor<X, Y, S
                 } else {
                     MazePart::Wall
                 });
-                tl.push(MazePart::Wall);
+                bl.push(MazePart::Wall);
             }
-            assert!(top_line.iter().any(|b| *b != MazePart::Noop));
-            assert!(bottom_line.iter().any(|b| *b != MazePart::Noop));
 
             bw.copy(&top_line);
             bw.copy(&bottom_line);
@@ -732,8 +731,8 @@ mod print_tests {
         impl std::fmt::Debug for MB {
             fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
                 write!(f, "\n");
-                for x in 0..11 {
-                    for y in 0..11 {
+                for y in 0..11 {
+                    for x in 0..11 {
                         let c = match self.0[y * 11 + x] {
                             P => '.',
                             W => '#',