diff --git a/modules/nix/linux-builder.nix b/modules/nix/linux-builder.nix
index da3aef286..030114022 100644
--- a/modules/nix/linux-builder.nix
+++ b/modules/nix/linux-builder.nix
@@ -22,6 +22,7 @@ let
     rm -rf $TMPDIR
     mkdir -p $TMPDIR
     trap "rm -rf $TMPDIR" EXIT
+    rm -f ${WorkingDirectory}/nixos.qcow2
     ${builderWithOverrides}/bin/create-builder
   '';
 in