diff --git a/.gitignore b/.gitignore
index a967c2e..4dd132e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 build
 .vscode
 .vscode/settings.json
+.DS_Store
\ No newline at end of file
diff --git a/client.c b/client.c
index 727ddc4..b90aac7 100644
--- a/client.c
+++ b/client.c
@@ -90,7 +90,7 @@ int main(int argc,char *argv[]) {   //usage: ./client host port
                         else puts("Send file error.");
                     #endif
                     fclose(fp);
-                    printf("Send count:%lld\n", len);
+                    printf("Send count:%u\n", len);
                 } else puts("Open file error!");
             } else {
                 send(sockfd, buf, strlen(buf), 0);
diff --git a/server.c b/server.c
index 5bd752a..a1c617a 100644
--- a/server.c
+++ b/server.c
@@ -152,7 +152,7 @@ int send_all(THREADTIMER *timer) {
             send_data(timer->accept_fd, timer->data, head_len);
             re = sendfile(timer->accept_fd, fileno(fp), &len, file_size) >= 0;
         #endif
-        printf("Send %lld bytes.\n", len);
+        printf("Send %u bytes.\n", len);
         close_dict();
         timer->is_open = 0;
     }