diff --git a/src/chat_commands.c b/src/chat_commands.c
index e2783a2..5ba7129 100644
--- a/src/chat_commands.c
+++ b/src/chat_commands.c
@@ -113,7 +113,7 @@ void cmd_savefile(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv
 
     uint8_t *filename = friends[self->num].file_receiver.filenames[filenum];
 
-    if (tox_file_sendcontrol(m, self->num, 1, filenum, TOX_FILECONTROL_ACCEPT, 0, 0))
+    if (tox_file_sendcontrol(m, self->num, 1, filenum, TOX_FILECONTROL_ACCEPT, 0, 0) == 0)
         wprintw(window, "Accepted file transfer %u. Saving file as: '%s'\n", filenum, filename);
     else
         wprintw(window, "File transfer failed.\n");
diff --git a/src/main.c b/src/main.c
index e5634b3..bcac388 100644
--- a/src/main.c
+++ b/src/main.c
@@ -395,8 +395,8 @@ static void do_file_senders(Tox *m)
         int pieces = 0;
 
         while (pieces++ < MAX_PIECES_SEND) {
-            if (!tox_file_senddata(m, friendnum, filenum, file_senders[i].nextpiece, 
-                                   file_senders[i].piecelen))
+            if (tox_file_senddata(m, friendnum, filenum, file_senders[i].nextpiece, 
+                                   file_senders[i].piecelen) == -1)
                 break;
 
             file_senders[i].timestamp = current_time;