diff --git a/arch/powerpc/platforms/celleb/setup.c b/arch/powerpc/platforms/celleb/setup.c
index 596ab2a788d4..5e9f7f163571 100644
--- a/arch/powerpc/platforms/celleb/setup.c
+++ b/arch/powerpc/platforms/celleb/setup.c
@@ -80,7 +80,7 @@ static int celleb_machine_type_hack(char *ptr)
 	return 0;
 }
 
-__setup("celleb_machine_type_hack", celleb_machine_type_hack);
+__setup("celleb_machine_type_hack=", celleb_machine_type_hack);
 
 static void celleb_progress(char *s, unsigned short hex)
 {