@@ -90,11 +90,11 @@
 }
 
 BOOL
 of_base64_decode(OFDataArray *data, const char *str, size_t len)
 {
-	uint8_t *buf = (uint8_t*)str;
+	const uint8_t *buf = (const uint8_t*)str;
 	size_t i;
 
 	if ((len & 3) != 0)
 		return NO;