Index: src/OFMD5Hash.m
==================================================================
--- src/OFMD5Hash.m
+++ src/OFMD5Hash.m
@@ -240,12 +240,12 @@
 	/* Append length in bits and transform */
 	in.u32[14] = bits[0];
 	in.u32[15] = bits[1];
 
 	md5_transform(buffer, in.u32);
-	of_bswap32_vec_if_be(buf, 4);
+	of_bswap32_vec_if_be(buffer, 4);
 
 	isCalculated = YES;
 
 	return (uint8_t*)buffer;
 }
 @end

Index: src/macros.h
==================================================================
--- src/macros.h
+++ src/macros.h
@@ -215,19 +215,19 @@
 # define of_bswap32_if_be(i) of_bswap32(i)
 # define of_bswap64_if_be(i) of_bswap64(i)
 # define of_bswap16_if_le(i) (i)
 # define of_bswap32_if_le(i) (i)
 # define of_bswap64_if_le(i) (i)
-# define of_bswap32_vec_if_be(buf, len) of_bswap32_vec(buf, len)
+# define of_bswap32_vec_if_be(buffer, length) of_bswap32_vec(buffer, length)
 #else
 # define of_bswap16_if_be(i) (i)
 # define of_bswap32_if_be(i) (i)
 # define of_bswap64_if_be(i) (i)
 # define of_bswap16_if_le(i) of_bswap16(i)
 # define of_bswap32_if_le(i) of_bswap32(i)
 # define of_bswap64_if_le(i) of_bswap64(i)
-# define of_bswap32_vec_if_be(buf, len)
+# define of_bswap32_vec_if_be(buffer, length)
 #endif
 
 #define OF_ROL(value, bits)						\
 	(((value) << ((bits) % (sizeof(value) * 8))) |			\
 	(value) >> (sizeof(value) * 8 - ((bits) % (sizeof(value) * 8))))