diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index fd639d9f79b..d4ad6e8ae88 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -228,7 +228,7 @@ static inline void copy_edd(void)
 }
 #endif
 
-int __initdata user_defined_memmap = 0;
+int __initdata user_defined_memmap;
 
 /*
  * "mem=nopentium" disables the 4MB page tables.