diff --git a/diskimage_builder/elements/bootloader/README.rst b/diskimage_builder/elements/bootloader/README.rst
index 4baf6eae..ce2147bc 100644
--- a/diskimage_builder/elements/bootloader/README.rst
+++ b/diskimage_builder/elements/bootloader/README.rst
@@ -13,6 +13,6 @@ Arguments
 * ``DIB_GRUB_TIMEOUT`` sets the ``grub`` menu timeout.  It defaults to
   5 seconds.  Set this to 0 (no timeout) for fast boot times.
 
-* ``DIB_BOOTLOADER_DEFAULT_CMD_LINE`` sets the CMDLINE parameters that
+* ``DIB_BOOTLOADER_DEFAULT_CMDLINE`` sets the CMDLINE parameters that
   are appended to the grub.cfg configuration. It defaults to
   'nofb nomodeset vga=normal'