diff --git a/guix-installer-vm-system.scm b/guix-installer-vm-system.scm
index 64885f9..cc318b7 100644
--- a/guix-installer-vm-system.scm
+++ b/guix-installer-vm-system.scm
@@ -95,13 +95,13 @@
          (addresses (list (network-address
                            (device "eth0")
                            (value "192.168.1.118/24"))
-			  (network-address
+                          (network-address
                            (device "eth0")
                            (value "2001:910:1021::118/64"))))
          (routes (list (network-route
                         (destination "default")
                         (gateway "192.168.0.1"))
-		       (network-route
+                       (network-route
                         (destination "default")
                         (gateway "192.168.0.1"))))
          (name-servers (list "192.168.0.1" "2001:910:1021::1")))))