diff --git a/Documentation/CodingGuidelines b/Documentation/CodingGuidelines
index 994eb9159a..d2a0a76e6c 100644
--- a/Documentation/CodingGuidelines
+++ b/Documentation/CodingGuidelines
@@ -89,6 +89,8 @@ For C programs:
    of "else if" statements, it can make sense to add braces to
    single line blocks.
 
+ - We try to avoid assignments inside if().
+
  - Try to make your code understandable.  You may put comments
    in, but comments invariably tend to stale out when the code
    they were describing changes.  Often splitting a function