diff --git a/src/main.c b/src/main.c
index 03c0c6e..7e84f3b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -191,6 +191,18 @@ void win_bar(WINDOW *lwin, int data, int data_max, int use_color) {
         wrefresh(lwin);
 }
 
+void bar_mark(WINDOW *lwin) {
+        int lwiny, lwinx;
+        int first_mark, last_mark;
+        getmaxyx(lwin, lwiny, lwinx);
+        first_mark = (75 * (lwinx - 4)) / 100;
+        last_mark = (90 * (lwinx - 4)) / 100;
+        mvwaddch(lwin, 0, first_mark + 1, '|');
+        mvwaddch(lwin, lwiny - 1, first_mark + 1, '|');
+        mvwaddch(lwin, 0, last_mark + 1, '|');
+        mvwaddch(lwin, lwiny - 1, last_mark + 1, '|');
+}
+
 int color_high(float data, float ldata, float hdata) {
         int percent = (int)((100.0f * (data - ldata)) / (hdata - ldata) + 0.5f);
         if (percent >= 90)      return 1;
@@ -286,6 +298,7 @@ int main(int argc, char **argv) {
                 mvwprintw(win[i], 0, 2, "%s", win_infos[i].title);
                 wrefresh(win[i]);
         }
+        bar_mark(win[4]);
 
         int speed = 0, power = 0, bat = 0, rpm = 0;
         float tq = 0.0f, eff = 0.0f, bat_temp = 0.0f, var_temp = 0.0f, mot_temp = 0.0f;