diff --git a/codec/encoder/core/src/wels_preprocess.cpp b/codec/encoder/core/src/wels_preprocess.cpp
index 659798ba..53720027 100644
--- a/codec/encoder/core/src/wels_preprocess.cpp
+++ b/codec/encoder/core/src/wels_preprocess.cpp
@@ -430,9 +430,9 @@ bool JudgeNeedOfScaling (SWelsSvcCodingParam* pParam, Scaled_Picture* pScaledPic
 
     if (iInputWidthXDstHeight > iInputHeightXDstWidth) {
       pScaledPicture->iScaledWidth[iSpatialIdx] = iCurDstWidth;
-      pScaledPicture->iScaledHeight[iSpatialIdx] = iInputHeightXDstWidth / kiInputPicWidth;
+      pScaledPicture->iScaledHeight[iSpatialIdx] = WELS_MAX (iInputHeightXDstWidth / kiInputPicWidth, 2);
     } else {
-      pScaledPicture->iScaledWidth[iSpatialIdx] = iInputWidthXDstHeight / kiInputPicHeight;
+      pScaledPicture->iScaledWidth[iSpatialIdx] = WELS_MAX (iInputWidthXDstHeight / kiInputPicHeight, 2);
       pScaledPicture->iScaledHeight[iSpatialIdx] = iCurDstHeight;
     }
   }