diff --git a/src/cn-cbor.c b/src/cn-cbor.c
index 9093537..2526b92 100644
--- a/src/cn-cbor.c
+++ b/src/cn-cbor.c
@@ -53,7 +53,7 @@
 
 #ifndef CBOR_ALIGN_READS
 #define ntoh16p(p) (ntohs(*(unsigned short*)(p)))
-#define ntoh32p(p) (ntohl(*(unsigned long*)(p)))
+#define ntoh32p(p) (ntohl(*(uint32_t*)(p)))
 #else
 static uint16_t ntoh16p(unsigned char *p) {
     uint16_t tmp;