diff --git a/system/virtualbox-kernel/README b/system/virtualbox-kernel/README
index bf8579d62e..6ce574997c 100644
--- a/system/virtualbox-kernel/README
+++ b/system/virtualbox-kernel/README
@@ -3,7 +3,7 @@ virtualisation environment.
 
 To build the package for a kernel different from the running one,
 start the script setting the KERNEL variable as in
-	KERNEL=2.6.38.8 ./virtualbox-kernel.SlackBuild
+  KERNEL=2.6.38.8 ./virtualbox-kernel.SlackBuild
 
 Note that if you have built virtualbox with HARDENING=no, then you
 have to do the same for virtualbox-kernel.