diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 5b4c25d12ff3..b1c83a6bfd54 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -356,7 +356,7 @@ struct page *realmode_pfn_to_page(unsigned long pfn)
 }
 EXPORT_SYMBOL_GPL(realmode_pfn_to_page);
 
-#elif defined(CONFIG_FLATMEM)
+#else
 
 struct page *realmode_pfn_to_page(unsigned long pfn)
 {
@@ -365,7 +365,7 @@ struct page *realmode_pfn_to_page(unsigned long pfn)
 }
 EXPORT_SYMBOL_GPL(realmode_pfn_to_page);
 
-#endif /* CONFIG_SPARSEMEM_VMEMMAP/CONFIG_FLATMEM */
+#endif /* CONFIG_SPARSEMEM_VMEMMAP */
 
 #ifdef CONFIG_PPC_STD_MMU_64
 static bool disable_radix;