diff --git a/doc/I09_Vectorization.dox b/doc/I09_Vectorization.dox
index 63831e59f..274d0451b 100644
--- a/doc/I09_Vectorization.dox
+++ b/doc/I09_Vectorization.dox
@@ -1,6 +1,6 @@
 namespace Eigen {
 
-/** \page TopicVectorization Vectorizaion
+/** \page TopicVectorization Vectorization
 
 
 TODO: write this dox page!