diff --git a/src/filemanager/midnight.c b/src/filemanager/midnight.c
index da07fef61..3b92959d7 100644
--- a/src/filemanager/midnight.c
+++ b/src/filemanager/midnight.c
@@ -864,7 +864,7 @@ setup_mc (void)
 
 #ifdef ENABLE_SUBSHELL
     if (mc_global.tty.use_subshell)
-        add_select_channel (mc_global.tty.subshell_pty, load_prompt, 0);
+        add_select_channel (mc_global.tty.subshell_pty, load_prompt, NULL);
 #endif /* !ENABLE_SUBSHELL */
 
     if ((tty_baudrate () < 9600) || mc_global.tty.slow_terminal)