diff --git a/ref/layout_instructions.mdwn b/ref/layout_instructions.mdwn
index a1b8488..114e136 100644
--- a/ref/layout_instructions.mdwn
+++ b/ref/layout_instructions.mdwn
@@ -95,7 +95,7 @@ from 2013.
 * Insert non-breaking space (`~`) before `\cite{}` and `\ref{}`
   commands. Remove spaces before punctuation marks (`.,:;`), add
   spaces outside of parenthesis but not inside.
-* Add `\ `after dots not endiong a sentence (`resp.\ `) and `\@`
+* Add `\ `after dots not ending a sentence (`resp.\ `) and `\@`
   before dots ending a sentence after a capital letter (`the
   PSNR\@`). _Lacheck_ is an useful tool to look for these details.
 * Use long dashes (`--`) between names (`Chan--Vese`), use `\ldots`