diff --git a/README.md b/README.md
index 1192b2c..820da1a 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ Simple application VM's based on Nix package manager.
 
 Uses one **read-only** /nix directory for all appvms. So creating a new appvm (but not first) is just about one minute.
 
-Currently optimized for full screen usage (but remote-viewer has ability to resize window dynamically without change resolution) without guest additions.
+Currently optimized for full screen usage (but remote-viewer has ability to resize window dynamically without change resolution).
 
 ![appvm screenshot](screenshots/2018-07-05.png)
 
diff --git a/appvm.go b/appvm.go
index 2e7cbf1..ee90c52 100644
--- a/appvm.go
+++ b/appvm.go
@@ -49,6 +49,10 @@ var xmlTmpl = `
       <listen type='address'/>
       <image compression='off'/>
     </graphics>
+    <!-- Guest additionals support -->
+    <channel type='spicevmc'>
+      <target type='virtio' name='com.redhat.spice.0'/>
+    </channel>
     <!-- Fake (because -snapshot) writeback image -->
     <disk type='file' device='disk'>
       <driver name='qemu' type='qcow2' cache='writeback' error_policy='report'/>
diff --git a/nix/base.nix b/nix/base.nix
index f86a5e1..a770e60 100644
--- a/nix/base.nix
+++ b/nix/base.nix
@@ -18,6 +18,8 @@
     windowManager.default = "xmonad";
   };
 
+  services.spice-vdagentd.enable = true;
+
   users.extraUsers.user = {
     isNormalUser = true;
     extraGroups = [ "audio" ];
@@ -29,7 +31,12 @@ import XMonad
 main = xmonad defaultConfig
   { workspaces = [ "" ]
   , borderWidth = 0
+  , startupHook = startup
   }
+
+startup :: X ()
+startup = do
+  spawn "spice-vdagent"
   '';
 
   systemd.services.home-user-build-xmonad = {