diff --git a/mpp/legacy/vpu_api_legacy.cpp b/mpp/legacy/vpu_api_legacy.cpp
index 349efb5f..eceebbac 100644
--- a/mpp/legacy/vpu_api_legacy.cpp
+++ b/mpp/legacy/vpu_api_legacy.cpp
@@ -192,9 +192,10 @@ static int copy_align_raw_buffer_to_dest(RK_U8 *dst, RK_U8 *src, RK_U32 width,
     RK_U8 *src_buf = src;
     RK_U32 row = 0;
     RK_U32 hor_stride = MPP_ALIGN(width, 16);
-    RK_U32 ver_stride = MPP_ALIGN(height, 16);
+    RK_U32 ver_stride = MPP_ALIGN(height, 8);
     RK_U8 *dst_u = dst_buf + hor_stride * ver_stride;
     RK_U8 *dst_v = dst_u + hor_stride * ver_stride / 4;
+
     switch (fmt) {
     case MPP_FMT_YUV420SP : {
         for (row = 0; row < height; row++) {