diff --git a/docs/algebras.dot.m4 b/docs/algebras.dot.m4
index 25ca4047..612b9f33 100644
--- a/docs/algebras.dot.m4
+++ b/docs/algebras.dot.m4
@@ -206,7 +206,7 @@ DivisibleGroup}
VectorSpace[
margin=2 label=<
-| VectorSpace |
| * | +-
⇆ | ⋅
⇆ | ≈ ≉ | +x -x inverse x² | u 1 0 |
| Vector3Space ℝₚ³ |
| ℚ³ |
+| VectorSpace |
| * | +-
⇆ | ⋅
⇆ | ≈ ≉ | +x -x inverse x² | u 1 0 |
| Vector3Space ℝₚ³ |
| Vector2Space ℝₚ³ |
| ℚ³ |
>
]
VectorSpace -> {AbelianRing}