diff --git a/crypto/sha/sha512.c b/crypto/sha/sha512.c
index d1aa7614b2f6bab444b0cd4d98c23330b82aaf68..cbc0e58c48865a4318daeae1c35a2121d501e418 100644
--- a/crypto/sha/sha512.c
+++ b/crypto/sha/sha512.c
@@ -380,7 +380,7 @@ static const SHA_LONG64 K512[80] = {
 				((SHA_LONG64)hi)<<32|lo;	})
 #   endif
 #  elif (defined(_ARCH_PPC) && defined(__64BIT__)) || defined(_ARCH_PPC64)
-#   define ROTR(a,n)	({ unsigned long ret;		\
+#   define ROTR(a,n)	({ SHA_LONG64 ret;		\
 				asm ("rotrdi %0,%1,%2"	\
 				: "=r"(ret)		\
 				: "r"(a),"K"(n)); ret;	})