diff --git a/mpp/codec/dec/h264/h264d_sei.c b/mpp/codec/dec/h264/h264d_sei.c
index efdf9575..4f0511b0 100755
--- a/mpp/codec/dec/h264/h264d_sei.c
+++ b/mpp/codec/dec/h264/h264d_sei.c
@@ -37,9 +37,10 @@ static MPP_RET interpret_picture_timing_info(
     H264_SEI_PIC_TIMING_t *pic_timing = NULL;
     RK_U32 num_clock_ts[9] = {1, 1, 1, 2, 2, 3, 3, 2, 3};
     struct h264_vui_t *vui_seq_parameters = NULL;
+    RK_S32 seq_parameter_set_id = sei_msg->seq_parameter_set_id;
 
-    if (!p_videoctx->spsSet[sei_msg->seq_parameter_set_id]) {
-        H264D_ERR("seq_parameter_set_id %d may be invalid\n", sei_msg->seq_parameter_set_id);
+    if (seq_parameter_set_id >= MAXSPS || !p_videoctx->spsSet[seq_parameter_set_id]) {
+        H264D_ERR("seq_parameter_set_id %d may be invalid\n", seq_parameter_set_id);
         goto __BITREAD_ERR;
     }
     vui_seq_parameters = &(p_videoctx->spsSet[sei_msg->seq_parameter_set_id]->vui_seq_parameters);