diff --git a/client.c b/client.c
index f25a249..22a2d5e 100644
--- a/client.c
+++ b/client.c
@@ -84,7 +84,7 @@ int main(int argc,char *argv[]) {   //usage: ./client host port
                         else puts("Send file error.");
                     #else
                         send(sockfd, &file_size, sizeof(uint32_t), 0);
-                        if(!sendfile(fileno(fp), sockfd, &len, file_size)) puts("Send file success.");
+                        if(!sendfile(sockfd, fileno(fp), &len, file_size)) puts("Send file success.");
                         else puts("Send file error.");
                     #endif
                     fclose(fp);
diff --git a/server.c b/server.c
index fbde2cd..d7e5366 100644
--- a/server.c
+++ b/server.c
@@ -136,9 +136,9 @@ int sendAll(char* file_path, THREADTIMER *timer) {
             sendfile(fileno(fp), timer->accept_fd, 0, &len, &hdtr, 0);
         #else
             send(timer->accept_fd, &file_size, sizeof(uint32_t), 0);
-            sendfile(fileno(fp), timer->accept_fd, &len, file_size);
+            sendfile(timer->accept_fd, fileno(fp), &len, file_size);
         #endif
-        printf("Send %lld bytes.", len);
+        printf("Send %lld bytes.\n", len);
         closeFile(fp);
         timer->is_open = 0;
     }