diff --git a/codec/decoder/core/src/decoder.cpp b/codec/decoder/core/src/decoder.cpp
index 6c634202a8..e3f14b8c0c 100644
--- a/codec/decoder/core/src/decoder.cpp
+++ b/codec/decoder/core/src/decoder.cpp
@@ -846,6 +846,10 @@ int32_t WelsDecodeBs (PWelsDecoderContext pCtx, const uint8_t* kpBsBuf, const in
             return pCtx->iErrorCode;
           }
 
+          if (pCtx->iErrorCode != ERR_NONE && !(pCtx->iErrorCode & dsDataErrorConcealed)) {
+              return pCtx->iErrorCode;
+          }
+
           pDstNal += (iDstIdx + 4); //init, increase 4 reserved zero bytes, used to store the next NAL
           if ((iSrcLength - iSrcConsumed + 4) > (pRawData->pEnd - pDstNal)) {
             pDstNal = pRawData->pCurPos = pRawData->pHead;