diff --git a/lvgl_tft/ili9488.c b/lvgl_tft/ili9488.c
index feb9fba..28d6def 100644
--- a/lvgl_tft/ili9488.c
+++ b/lvgl_tft/ili9488.c
@@ -118,7 +118,7 @@ void ili9488_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * col
     lv_color16_t *buffer_16bit = (lv_color16_t *) color_map;
     uint8_t *mybuf;
     do {
-        mybuf = (uint8_t *) heap_caps_malloc(3 * size * sizeof(uint8_t), MALLOC_CAP_DMA);
+        mybuf = (uint8_t *) heap_caps_malloc(3 * size * sizeof(uint8_t) + 3, MALLOC_CAP_DMA);
         if (mybuf == NULL)  ESP_LOGW(TAG, "Could not allocate enough DMA memory!");
     } while (mybuf == NULL);