diff --git a/inc/rk_mpi_cmd.h b/inc/rk_mpi_cmd.h
index 1f5cb537..d3bf31ad 100644
--- a/inc/rk_mpi_cmd.h
+++ b/inc/rk_mpi_cmd.h
@@ -120,7 +120,7 @@ typedef enum {
     MPP_ENC_GET_EXTRA_INFO,             /* deprecated */
     MPP_ENC_SET_SEI_CFG,                /* SEI: Supplement Enhancemant Information, parameter is MppSeiMode */
     MPP_ENC_GET_SEI_DATA,               /* SEI: Supplement Enhancemant Information, parameter is MppPacket */
-    MPP_ENC_PRE_ALLOC_BUFF,             /* allocate buffers before encoding */
+    MPP_ENC_PRE_ALLOC_BUFF,             /* deprecated */
     MPP_ENC_SET_QP_RANGE,               /* used for adjusting qp range, the parameter can be 1 or 2 */
     MPP_ENC_SET_ROI_CFG,                /* set MppEncROICfg structure */
     MPP_ENC_SET_CTU_QP,                 /* for H265 Encoder,set CTU's size and QP */
diff --git a/mpp/codec/mpp_enc_impl.cpp b/mpp/codec/mpp_enc_impl.cpp
index 0f699c10..425e2858 100644
--- a/mpp/codec/mpp_enc_impl.cpp
+++ b/mpp/codec/mpp_enc_impl.cpp
@@ -656,6 +656,10 @@ MPP_RET mpp_enc_proc_cfg(MppEncImpl *enc, MpiCmd cmd, void *param)
 
         enc->hdr_status.added_by_ctrl = 1;
     } break;
+    case MPP_ENC_PRE_ALLOC_BUFF : {
+        /* deprecated control */
+        mpp_log("deprecated MPP_ENC_PRE_ALLOC_BUFF control\n");
+    } break;
     case MPP_ENC_GET_RC_API_ALL : {
         RcApiQueryAll *query = (RcApiQueryAll *)param;