diff --git a/src/debug.c b/src/debug.c
index e205e30..c596646 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -75,7 +75,7 @@ void print_data(list * l){
             print_debug(">>     Peer ID      | Seqno | Length |  Message ");
             while(l != NULL){
                 pub_data * message = l->data;
-                printf("\x1b[31m[DEBUG]\x1b[0m >> %li | %i  |   %i   | “%s” \n", message->id, message->seqno, message->length, message->data);
+                printf("\x1b[31m[DEBUG]\x1b[0m >> %lu | %i  |   %i   | “%s” \n", message->id, message->seqno, message->length, message->data);
                 nbr_msg++;
                 if (l->next == NULL) {
                     break;
@@ -97,7 +97,7 @@ void print_data_info(list * l){
         print_info(">>      Peer ID        | Seqno | Length |  Message ");
         while(l != NULL){
             pub_data * message = l->data;
-            printf("\x1b[1m\x1b[36m[大字报]\x1b[0m >> %li |  %i  |   %i   | “%s” \n", message->id, message->seqno, message->length, message->data);
+            printf("\x1b[1m\x1b[36m[大字报]\x1b[0m >> %lu |  %i  |   %i   | “%s” \n", message->id, message->seqno, message->length, message->data);
             nbr_msg++;
             if (l->next == NULL) {
                 break;