diff --git a/src/doc/trpl/rust-inside-other-languages.md b/src/doc/trpl/rust-inside-other-languages.md
index 6129c98259b..0270a92b8c9 100644
--- a/src/doc/trpl/rust-inside-other-languages.md
+++ b/src/doc/trpl/rust-inside-other-languages.md
@@ -111,7 +111,7 @@ fn process() {
             for _ in (0..5_000_000) {
                 x += 1
             }
-	    x
+            x
         })
     }).collect();