diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 0e4617104f8caa29710f01fd9a0e5b1e2785e969..2c1186ada3ab4a9ccf974a0879b6d0b33f6e32b8 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -586,11 +586,12 @@ config ARCH_SELECT_MEMORY_MODEL
 	depends on PPC64
 
 config ARCH_FLATMEM_ENABLE
-       def_bool y
-       depends on PPC64 && !NUMA
+	def_bool y
+	depends on (PPC64 && !NUMA) || PPC32
 
 config ARCH_SPARSEMEM_ENABLE
 	def_bool y
+	depends on PPC64
 
 config ARCH_SPARSEMEM_DEFAULT
 	def_bool y