diff --git a/network.c b/network.c
index 511322adb..f3916ff80 100644
--- a/network.c
+++ b/network.c
@@ -320,7 +320,7 @@ static char * network_get_description(struct addrinfo *res)
 				if (errno == 0) {
 					/* Windows uses numerical interface identifiers */
 					ptr = description + strnlen(description, len) + 1;
-					iio_snprintf(ptr, IF_NAMESIZE, "%u", in->sin6_scope_id);
+					iio_snprintf(ptr, IF_NAMESIZE, "%lu", in->sin6_scope_id);
 				} else
 #endif
 				{