diff --git a/Core/Src/lcd.c b/Core/Src/lcd.c
index d1573e3..7e70a0b 100644
--- a/Core/Src/lcd.c
+++ b/Core/Src/lcd.c
@@ -136,6 +136,9 @@ static void display_write_data_byte_direct(uint8_t code)
 
 static void display_write_data_byte_framebuffer(uint8_t code)
 {
+	if (display_current_frame >= DISPLAY_FRAMES_AVAILABLE)
+		return;
+
 	display_framebuffer[16*2*display_current_frame + des.cursor_offset] = (char) code;
 	des.cursor_offset += des.next ? -1 : 1;
 }