diff --git a/doc/CODING-GUIDELINES b/doc/CODING-GUIDELINES
index 85f94fcc45..7d613b7264 100644
--- a/doc/CODING-GUIDELINES
+++ b/doc/CODING-GUIDELINES
@@ -170,7 +170,7 @@ Instead, try to minimize the number of lines of code that need to be
 indented, by only indenting the shortest case of the 'if'
 statement, like so:
 
-if !(foo) {
+if (!foo) {
 	result = 0;
 	return;
 }