diff --git a/src/drivers/nuttx/lv_nuttx_cache.c b/src/drivers/nuttx/lv_nuttx_cache.c
index e8798acc9c..0655d2f562 100644
--- a/src/drivers/nuttx/lv_nuttx_cache.c
+++ b/src/drivers/nuttx/lv_nuttx_cache.c
@@ -55,7 +55,6 @@ static void invalidate_cache(const lv_draw_buf_t * draw_buf, const lv_area_t * a
     LV_ASSERT_NULL(draw_buf);
     void * buf = draw_buf->data;
     uint32_t stride = draw_buf->header.stride;
-    lv_color_format_t cf = draw_buf->header.cf;
 
     lv_uintptr_t start;
     lv_uintptr_t end;