1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86_64/mm/ioremap.c b/arch/x86_64/mm/ioremap.c
index 58aac23760e..6972df480d2 100644
--- a/arch/x86_64/mm/ioremap.c
+++ b/arch/x86_64/mm/ioremap.c
@@ -178,7 +178,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
         if (phys_addr >= ISA_START_ADDRESS && last_addr < ISA_END_ADDRESS)
                 return (__force void __iomem *)phys_to_virt(phys_addr);
 
-#ifndef CONFIG_DISCONTIGMEM
+#ifdef CONFIG_FLATMEM
         /*
          * Don't allow anybody to remap normal RAM that we're using..
          */