diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 4ca3e6ad03ec..911206386171 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -99,10 +99,7 @@ static inline int __remove_pages(struct zone *zone, unsigned long start_pfn,
 	return -ENOSYS;
 }
 
-#if defined(CONFIG_MEMORY_HOTPLUG) || defined(CONFIG_ACPI_HOTPLUG_MEMORY) \
-	|| defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)
 extern int add_memory(u64 start, u64 size);
 extern int remove_memory(u64 start, u64 size);
-#endif
 
 #endif /* __LINUX_MEMORY_HOTPLUG_H */