diff --git a/Performance-Tips.md b/Performance-Tips.md
index 31ba090..965e8bc 100644
--- a/Performance-Tips.md
+++ b/Performance-Tips.md
@@ -7,7 +7,7 @@ One drawing function like `DrawImage` or `Fill` is usually treated as one (inter
 * All the functions are `DrawImage` or `DrawTriangles`
 * All the render targets are same (`A` in `A.DrawImage(B, op)`)
 * Either all ColorM element values are same or all the ColorM have only diagonal ('scale') elements
-  * (*ColorM).Scale modifies only diagonal elements. Other ColorM funcitons might modify the other elements.
+  * (*ColorM).Scale modifies only diagonal elements. Other ColorM functions might modify the other elements.
 * All the composite modes are same
 * All the filter values are same
 * All the address values are same (only for `DrawTriangles`)