diff --git a/src/rust-2018/rustup-for-managing-rust-versions.md b/src/rust-2018/rustup-for-managing-rust-versions.md
index 53b32450..73be9e6b 100644
--- a/src/rust-2018/rustup-for-managing-rust-versions.md
+++ b/src/rust-2018/rustup-for-managing-rust-versions.md
@@ -50,7 +50,7 @@ will update anything that has one.
 To set the default toolchain to something other than `stable`:
 
 ```console
-$ rustup toolchain default nightly
+$ rustup default nightly
 ```
 
 To use a toolchain other than the default, use `rustup run`: