diff --git a/forth.html.markdown b/forth.html.markdown
index f7c0bf34..5c161746 100644
--- a/forth.html.markdown
+++ b/forth.html.markdown
@@ -133,7 +133,7 @@ variable age    \ ok
 age @ .    \ 21 ok
 age ?      \ 21 ok
 
-\ Constants are quite simiar, except we don't bother with memory addresses:
+\ Constants are quite similar, except we don't bother with memory addresses:
 100 constant WATER-BOILING-POINT    \ ok
 WATER-BOILING-POINT .               \ 100 ok