diff --git a/nixos/tests/iscsi-multipath-root.nix b/nixos/tests/iscsi-multipath-root.nix
index ba17ac64058e..90723bdbb604 100644
--- a/nixos/tests/iscsi-multipath-root.nix
+++ b/nixos/tests/iscsi-multipath-root.nix
@@ -186,6 +186,7 @@ in
         boot.initrd.extraFiles."etc/multipath/wwids".source =
           pkgs.writeText "wwids" "/3600140592b17c3f6b404168b082ceeb7/";
 
+        boot.initrd.systemd.enable = false;
         boot.iscsi-initiator = {
           discoverPortal = "target";
           name = initiatorName;
diff --git a/nixos/tests/iscsi-root.nix b/nixos/tests/iscsi-root.nix
index e8c98a39931c..571dbecad244 100644
--- a/nixos/tests/iscsi-root.nix
+++ b/nixos/tests/iscsi-root.nix
@@ -142,6 +142,8 @@ in
           };
         };
 
+        # No SCSI support in systemd stage 1 at present.
+        boot.initrd.systemd.enable = false;
         boot.iscsi-initiator = {
           discoverPortal = "target";
           name = initiatorName;