diff --git a/codec/encoder/core/src/encoder_ext.cpp b/codec/encoder/core/src/encoder_ext.cpp
index da41db93..5e3b22ce 100644
--- a/codec/encoder/core/src/encoder_ext.cpp
+++ b/codec/encoder/core/src/encoder_ext.cpp
@@ -4877,7 +4877,7 @@ int32_t SliceBufferRealloc (sWelsEncCtx* pCtx) {
     pSliceIdx->sSlicingOverRc.iTotalQpSlice         = 0;
     pSliceIdx->sSlicingOverRc.iTotalMbSlice         = 0;
     pSliceIdx->sSlicingOverRc.iTargetBitsSlice      = WELS_DIV_ROUND (kiBitsPerMb *
-                                                      pCurLayer->sLayerInfo.pSliceInLayer[uiSliceIdx].iCountMbNumInSlice,
+                                                      pSlice[uiSliceIdx].iCountMbNumInSlice,
                                                       INT_MULTIPLY);
     pSliceIdx->sSlicingOverRc.iFrameBitsSlice       = 0;
     pSliceIdx->sSlicingOverRc.iGomBitsSlice         = 0;