diff --git a/fish/src/eval/downstacking.rs b/fish/src/eval/downstacking.rs
index faa3a5f..9cba368 100644
--- a/fish/src/eval/downstacking.rs
+++ b/fish/src/eval/downstacking.rs
@@ -48,12 +48,12 @@ pub fn mystery_mdse(init_mat: &Mat) -> i32 {
 ///
 /// Consider the following stack:
 ///
-///     + 0123456789
-///     4 .x.......x
-///     3 .x......xx
-///     2 xxx...xxxx
-///     1 xxxxxxxx.x
-///     0 xx..xxxxxx
+///   + 0123456789
+///   4 .x.......x
+///   3 .x......xx
+///   2 xxx...xxxx
+///   1 xxxxxxxx.x
+///   0 xx..xxxxxx
 ///
 /// Given this stack, `residue` returns the range `2..4`. The hole found is in row 1
 /// column 8, and there are two rows of residue above it. Note that the hole in row 0