diff --git a/nixos/tests/zram-generator.nix b/nixos/tests/zram-generator.nix
index 46414efee4b3..5f6432a78857 100644
--- a/nixos/tests/zram-generator.nix
+++ b/nixos/tests/zram-generator.nix
@@ -38,9 +38,9 @@
     machine.wait_for_unit("systemd-zram-setup@zram0.service")
     machine.wait_for_unit("systemd-zram-setup@zram1.service")
     zram = machine.succeed("zramctl --noheadings --raw")
-    swap = machine.succeed("swapon --show --noheadings")
+    swap = machine.succeed("swapon --show --noheadings --raw")
     for i in range(2):
         assert f"/dev/zram{i} lz4 10M" in zram
-        assert f"/dev/zram{i} partition  10M" in swap
+        assert f"/dev/zram{i} partition 10M" in swap
   '';
 }