diff --git a/arch/m68k/include/asm/hash.h b/arch/m68k/include/asm/hash.h
index 6d0d0c893f16..6dadf4937066 100644
--- a/arch/m68k/include/asm/hash.h
+++ b/arch/m68k/include/asm/hash.h
@@ -2,6 +2,8 @@
 #ifndef _ASM_HASH_H
 #define _ASM_HASH_H
 
+#include <linux/wordpart.h>
+
 /*
  * If CONFIG_M68000=y (original mc68000/010), this file is #included
  * to work around the lack of a MULU.L instruction.
@@ -54,7 +56,7 @@ static inline u32 __attribute_const__ __hash_32(u32 x)
 	: "=&d,d" (a), "=&r,r" (b)
 	: "r,roi?" (x));	/* a+b = x*0x8647 */
 
-	return ((u16)(x*0x61c8) << 16) + a + b;
+	return (lower_16_bits(x * 0x61c8) << 16) + a + b;
 }
 
 #endif	/* _ASM_HASH_H */