diff --git a/src/main.c b/src/main.c
index bdd862d..152fabf 100644
--- a/src/main.c
+++ b/src/main.c
@@ -20,13 +20,20 @@ int main(void) {
 	init_lcd();
 	lcd_puts("Test e-paper");
 	lcd_position(1, 0);
-	lcd_puts("Initialisation ok");
+	lcd_puts("Initialisation ok ");
+
+	int j = 0;
 
 	while(1) {
 		for(int i = 100000; i>0; i--);
 		epaper_clearframe(0xFF);
 		for(int i = 100000; i>0; i--);
 		epaper_clearframe(0x88);
+
+		lcd_position(1, 0);
+		lcd_puts("                ");
+		lcd_position(1, 0);
+		lcd_putc((j++ % 26) + 'A');
 	};
 
 } // end of main