diff --git a/src/pattern-matching/match-guards.md b/src/pattern-matching/match-guards.md
index 5c58e83a..b61e09a9 100644
--- a/src/pattern-matching/match-guards.md
+++ b/src/pattern-matching/match-guards.md
@@ -6,3 +6,14 @@ expression which will be executed if the pattern matches:
 ```rust,editable
 {{#include ../../third_party/rust-by-example/match-guards.rs}}
 ```
+
+<details>
+
+Match guards as a separate syntax feature are important and necessary. They are not
+the same as separate `if` expression inside of the match arm.
+  
+An `if` expression inside of the branch block (after `=>`) happens after the match arm
+is selected. Failing the `if` condition inside of that block won't result in other arms
+of the original `match` expression being considered.
+  
+</details>