diff --git a/lib/sha1.c b/lib/sha1.c
index 2f7f114..1cdabe3 100644
--- a/lib/sha1.c
+++ b/lib/sha1.c
@@ -41,7 +41,7 @@
 	__u32 a, b, c, d, e, t, i;
 
 	for (i = 0; i < 16; i++)
-		W[i] = be32_to_cpu(((const __u32 *)in)[i]);
+		W[i] = be32_to_cpu(((const __be32 *)in)[i]);
 
 	for (i = 0; i < 64; i++)
 		W[i+16] = rol32(W[i+13] ^ W[i+8] ^ W[i+2] ^ W[i], 1);