diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index 0995c2d..f589222 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -357,12 +357,12 @@
 /* Only NUMA needs hash distribution. 64bit NUMA architectures have
  * sufficient vmalloc space.
  */
-#if defined(CONFIG_NUMA) && defined(CONFIG_64BIT)
-#define HASHDIST_DEFAULT 1
-#else
-#define HASHDIST_DEFAULT 0
-#endif
+#ifdef CONFIG_NUMA
+#define HASHDIST_DEFAULT IS_ENABLED(CONFIG_64BIT)
 extern int hashdist;		/* Distribute hashes across NUMA nodes? */
+#else
+#define hashdist (0)
+#endif
 
 
 #endif /* _LINUX_BOOTMEM_H */