diff --git a/readme.md b/readme.md
index 854e46f..2464dc7 100644
--- a/readme.md
+++ b/readme.md
@@ -4283,7 +4283,7 @@ Layout objects in a line with equal gaps given a vector of their widths.
 ---
 <a name="Maths"></a>
 ## Maths
-Maths utilities for minapulating vectors and matrices.
+Maths utilities for manipulating vectors and matrices.
 
 
 [utils/maths.scad](utils/maths.scad) Implementation.
diff --git a/utils/maths.scad b/utils/maths.scad
index 97b6bb2..8cf8000 100644
--- a/utils/maths.scad
+++ b/utils/maths.scad
@@ -18,7 +18,7 @@
 //
 
 //
-//! Maths utilities for minapulating vectors and matrices.
+//! Maths utilities for manipulating vectors and matrices.
 //
 function sqr(x) = x * x;