diff --git a/library/core/tests/num/nan.rs b/library/core/tests/num/nan.rs
index 6d64f93cfa4b..011ffa790bee 100644
--- a/library/core/tests/num/nan.rs
+++ b/library/core/tests/num/nan.rs
@@ -1,8 +1,8 @@
 #[test]
 fn test_nan() {
-  use core::f64;
-  let x = "NaN".to_string();
-  assert_eq!(format!("{}", f64::NAN), x);
-  assert_eq!(format!("{:e}", f64::NAN), x);
-  assert_eq!(format!("{:E}", f64::NAN), x);
+    use core::f64;
+    let x = "NaN".to_string();
+    assert_eq!(format!("{}", f64::NAN), x);
+    assert_eq!(format!("{:e}", f64::NAN), x);
+    assert_eq!(format!("{:E}", f64::NAN), x);
 }