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@@ -111,7 +111,7 @@ <h2 id="installation-rustup">Installation via Rustup</h2>
           Install Rust <code>nightly</code> and <code>rust-src</code> via Rustup by typing the following snippet into a terminal.
           The <code>rust-src</code> component is required to allow Rust to compile <code>libcore</code> for any chip being targeted.
           <pre><code>
-            $ rustup component add nightly rust-src
+            $ rustup component add --toolchain nightly rust-src
           </code></pre>
         </li>
         <li>Done!