diff --git a/src/ui/inputwin.c b/src/ui/inputwin.c
index 165a0b32..e6782206 100644
--- a/src/ui/inputwin.c
+++ b/src/ui/inputwin.c
@@ -426,7 +426,7 @@ inp_readline(void)
 
         rl_callback_read_char();
 
-        if (rl_line_buffer && rl_line_buffer[0] != '/') {
+        if (rl_line_buffer && rl_line_buffer[0] != '/' && rl_line_buffer[0] != '\0' && rl_line_buffer[0] != '\n') {
             prof_handle_activity();
         }