diff --git a/source/index_vm.rst b/source/index_vm.rst
index 2fc5c651..cae2797d 100644
--- a/source/index_vm.rst
+++ b/source/index_vm.rst
@@ -4,8 +4,8 @@ Running in a virtualized environment
 .. toctree::
    :maxdepth: 2
 
-   vm-kvm.rst
-   vm-virtualbox.rst
-   vm-vmware-esxi.rst
-   vm-vmware-player.rst
+   vm-kvm
+   vm-virtualbox
+   vm-vmware-esxi
+   vm-vmware-player