diff --git a/documentation/dev-manual/dev-manual-model.xml b/documentation/dev-manual/dev-manual-model.xml
index 465d9ca701..cf489df5c5 100644
--- a/documentation/dev-manual/dev-manual-model.xml
+++ b/documentation/dev-manual/dev-manual-model.xml
@@ -370,7 +370,7 @@
 
             <para>
                 What happens during the build?  
-                When you build the kernel on your development system all files needed for the build
+                When you build the kernel on your development system, all files needed for the build
                 are taken from the source repositories pointed to by the 
                 <filename>SRC_URI</filename> variable and gathered in a temporary work area
                 where they are subsequently used to create the unique kernel.