diff --git a/input/intro.xml b/input/intro.xml
index 4eb2beb6..02ad7f56 100644
--- a/input/intro.xml
+++ b/input/intro.xml
@@ -51,7 +51,7 @@
       level.</para>
       <para>This book aims to move in completely the opposite
       direction, working from operating systems fundamentals through
-      to how those applications are complied and executed.  </para>
+      to how those applications are compiled and executed.  </para>
     </section>
     <section>
       <info>