diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 2710018ac809..94f5a8eb2c22 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -501,10 +501,6 @@ config ARCH_DISCONTIGMEM_ENABLE
 	  or have huge holes in the physical address space for other reasons.
 	  See <file:Documentation/vm/numa> for more.
 
-config ARCH_FLATMEM_DISABLE
-	def_bool y
-	depends on ARCH_DISCONTIGMEM_ENABLE
-
 config NUMA
 	bool "NUMA Support"
 	depends on SGI_IP27
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index ab7cc4eb7fc1..ce327c799b44 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -157,10 +157,6 @@ config ARCH_DISCONTIGMEM_ENABLE
 	  or have huge holes in the physical address space for other reasons.
 	  See <file:Documentation/vm/numa> for more.
 
-config ARCH_FLATMEM_DISABLE
-	def_bool y
-	depends on ARCH_DISCONTIGMEM_ENABLE
-
 source "mm/Kconfig"
 
 config PREEMPT
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index ac2b865359b2..a7c8bfc11604 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -496,10 +496,6 @@ config ARCH_DISCONTIGMEM_ENABLE
 	  or have huge holes in the physical address space for other reasons.
 	  See <file:Documentation/vm/numa> for more.
 
-config ARCH_FLATMEM_DISABLE
-	def_bool y
-	depends on ARCH_DISCONTIGMEM_ENABLE
-
 source "mm/Kconfig"
 
 config ZERO_PAGE_OFFSET