diff --git a/src/modules/grubcfg/main.py b/src/modules/grubcfg/main.py
index fcba7677b..95c037ac1 100644
--- a/src/modules/grubcfg/main.py
+++ b/src/modules/grubcfg/main.py
@@ -104,8 +104,8 @@ def modify_grub_default(partitions, root_mount_point, distributor):
     kernel_params = ["quiet"]
 
     if os.path.exists(os.path.join(root_mount_point, "usr/bin/grub-set-bootflag")):
-        kernel_params.extend("loglevel=3", "vga=current", "rd.systemd.show_status=auto",
-                "rd.udev.log-priority=3", "vt.global_cursor_default=0")
+        kernel_params.adapted("loglevel=3 vga=current rd.systemd.show_status=auto \
+                rd.udev.log-priority=3 vt.global_cursor_default=0")
 
     if cryptdevice_params:
         kernel_params.extend(cryptdevice_params)