diff --git a/mpp/codec/dec/mpg4/mpg4d_api.c b/mpp/codec/dec/mpg4/mpg4d_api.c
index 0461915e..aa9e7be2 100644
--- a/mpp/codec/dec/mpg4/mpg4d_api.c
+++ b/mpp/codec/dec/mpg4/mpg4d_api.c
@@ -309,7 +309,6 @@ static MPP_RET mpg4d_parse(void *dec, HalDecTask *task)
 
 static MPP_RET mpg4d_callback(void *dec, void *err_info)
 {
-    MPP_RET ret = MPP_ERR_UNKNOW;
     Mpg4dCtx *p_Dec = (Mpg4dCtx *)dec;
     IOCallbackCtx *ctx = (IOCallbackCtx *)err_info;
 
diff --git a/mpp/hal/vpu/mpg4d/hal_m4vd_vdpu1.c b/mpp/hal/vpu/mpg4d/hal_m4vd_vdpu1.c
index 7abe5f41..e02168ca 100644
--- a/mpp/hal/vpu/mpg4d/hal_m4vd_vdpu1.c
+++ b/mpp/hal/vpu/mpg4d/hal_m4vd_vdpu1.c
@@ -427,7 +427,6 @@ MPP_RET vdpu1_mpg4d_wait(void *hal, HalTaskInfo *task)
 {
     MPP_RET ret = MPP_OK;
     hal_mpg4_ctx *ctx = (hal_mpg4_ctx *)hal;
-    M4vdVdpu1Regs_t reg_out;
     M4vdVdpu1Regs_t *regs = (M4vdVdpu1Regs_t *)ctx->regs;
     RK_U32 reg_count = (sizeof(M4vdVdpu1Regs_t) / sizeof(RK_U32));