diff --git a/boards/shields/st_lcd_dsi_mb1835/st_lcd_dsi_mb1835.overlay b/boards/shields/st_lcd_dsi_mb1835/st_lcd_dsi_mb1835.overlay
index df57cd40a1bfd..c3361d3aee88b 100644
--- a/boards/shields/st_lcd_dsi_mb1835/st_lcd_dsi_mb1835.overlay
+++ b/boards/shields/st_lcd_dsi_mb1835/st_lcd_dsi_mb1835.overlay
@@ -88,7 +88,7 @@
 	status = "okay";
 	width = <480>;
 	height = <480>;
-	pixel-format = <PANEL_PIXEL_FORMAT_RGB_888>;
+	pixel-format = <PANEL_PIXEL_FORMAT_ARGB_8888>;
 
 	bl-ctrl-gpios = <&dsi_lcd_qsh_030 53 GPIO_ACTIVE_HIGH>;
 
diff --git a/samples/subsys/input/draw_touch_events/src/main.c b/samples/subsys/input/draw_touch_events/src/main.c
index ed232de08624a..a1bef59988fd3 100644
--- a/samples/subsys/input/draw_touch_events/src/main.c
+++ b/samples/subsys/input/draw_touch_events/src/main.c
@@ -70,7 +70,15 @@ static void clear_screen(void)
 
 	for (x = 0; x < WIDTH; x += CROSS_DIM) {
 		for (y = 0; y < HEIGHT; y += CROSS_DIM) {
-			display_write(display_dev, x, y, &buf_desc, buffer_cross_empty);
+			struct display_buffer_descriptor ddesc = buf_desc;
+			uint16_t rem_w = WIDTH - x;
+			uint16_t rem_h = HEIGHT - y;
+
+			ddesc.width = MIN(buf_desc.width, rem_w);
+			ddesc.height = MIN(buf_desc.height, rem_h);
+			ddesc.buf_size = ddesc.width * ddesc.height * BPP;
+
+			display_write(display_dev, x, y, &ddesc, buffer_cross_empty);
 		}
 	}
 }