diff --git a/src/doc/trpl/if-let.md b/src/doc/trpl/if-let.md
index 7173303e3b1..4872ed6a773 100644
--- a/src/doc/trpl/if-let.md
+++ b/src/doc/trpl/if-let.md
@@ -65,7 +65,7 @@ loop as long as a value matches a certain pattern. It turns code like this:
 loop {
     match option {
         Some(x) => println!("{}", x),
-	_ => break,
+        _ => break,
     }
 }
 ```