diff --git a/nixos/tests/installer.nix b/nixos/tests/installer.nix
index 398ad8de19cf..300f66027899 100644
--- a/nixos/tests/installer.nix
+++ b/nixos/tests/installer.nix
@@ -291,7 +291,7 @@ let
           # builds stuff in the VM, needs more juice
           virtualisation.diskSize = 8 * 1024;
           virtualisation.cores = 8;
-          virtualisation.memorySize = 1536;
+          virtualisation.memorySize = 2047;
 
           boot.initrd.systemd.enable = systemdStage1;