diff --git a/doc/ref/not.html b/doc/ref/not.html
index 063d18e..ffd8a93 100644
--- a/doc/ref/not.html
+++ b/doc/ref/not.html
@@ -21,7 +21,7 @@
 		</dl>
 	<h4>Remarks</h4>
 		<div>
-			If <i>x</i> is non-zero, this macro expands to <i>1</i>.&nbsp;
+			If <i>x</i> is zero, this macro expands to <i>1</i>.&nbsp;
 			Otherwise, it expands to <i>0</i>.
 		</div>
 		<div>