diff --git a/index.html b/index.html
index 4748760..e5729d1 100644
--- a/index.html
+++ b/index.html
@@ -96,7 +96,7 @@ <h2 id="install">Building the library</h2>
 
         <div id="build_unix">
           <div class="description">Start by configuring the build system by running:</div>
-          <pre class="sunburst">$ mdkir build && cd build
+          <pre class="sunburst">$ mkdir build && cd build
 $ cmake .. </pre>
           <div class="description">Then build the library</div>
           <pre class="sunburst">$ make</pre>