diff --git a/hermit/arch/x86/include/asm/multiboot.h b/hermit/arch/x86/include/asm/multiboot.h
index 298091610..5b8826a9a 100644
--- a/hermit/arch/x86/include/asm/multiboot.h
+++ b/hermit/arch/x86/include/asm/multiboot.h
@@ -33,7 +33,7 @@
 /// Does the bootloader provide mem_* fields?
 #define MULTIBOOT_INFO_MEM		(1 << 0)
 /// Does the bootloader provide the command-line?
-#define MULTIBOOT_INFO_CMDLINE	(1 << 2)
+#define MULTIBOOT_INFO_CMDLINE		(1 << 2)
 /// Does the bootloader provide a list of modules?
 #define MULTIBOOT_INFO_MODS		(1 << 3)
 /// Does the bootloader provide a full memory map?