diff --git a/codec/encoder/core/src/svc_motion_estimate.cpp b/codec/encoder/core/src/svc_motion_estimate.cpp
index 976c238c..d0dd9c26 100644
--- a/codec/encoder/core/src/svc_motion_estimate.cpp
+++ b/codec/encoder/core/src/svc_motion_estimate.cpp
@@ -547,7 +547,7 @@ bool FeatureSearchOne( SFeatureSearchIn &sFeatureSearchIn, const int32_t iFeatur
 void MotionEstimateFeatureFullSearch( SFeatureSearchIn &sFeatureSearchIn,
                                         const uint32_t kuiMaxSearchPoint,
                                         SWelsME* pMe) {
-  SFeatureSearchOut sFeatureSearchOut = {0};//TODO: this can be refactored and removed
+  SFeatureSearchOut sFeatureSearchOut = { { 0 } };//TODO: this can be refactored and removed
   sFeatureSearchOut.uiBestSadCost = pMe->uiSadCost;
   sFeatureSearchOut.sBestMv = pMe->sMv;
   sFeatureSearchOut.pBestRef = pMe->pRefMb;
diff --git a/codec/encoder/core/src/wels_preprocess.cpp b/codec/encoder/core/src/wels_preprocess.cpp
index 4d1727ed..63a02705 100644
--- a/codec/encoder/core/src/wels_preprocess.cpp
+++ b/codec/encoder/core/src/wels_preprocess.cpp
@@ -1013,15 +1013,15 @@ ESceneChangeIdc CWelsPreProcess::DetectSceneChangeScreen (sWelsEncCtx* pCtx, SPi
     return LARGE_CHANGED_SCENE;
   }
 
-  SRefInfoParam sAvailableRefList[MAX_REF_PIC_COUNT] = {0};
+  SRefInfoParam sAvailableRefList[MAX_REF_PIC_COUNT] = { { 0 } };
   int32_t iAvailableRefNum = 0;
   int32_t iAvailableSceneRefNum = 0;
 
   int32_t iSceneChangeMethodIdx = METHOD_SCENE_CHANGE_DETECTION_SCREEN;
   SSceneChangeResult sSceneChangeResult = {SIMILAR_SCENE, 0, 0, NULL};
 
-  SPixMap sSrcMap = {0};
-  SPixMap sRefMap = {0};
+  SPixMap sSrcMap = { { 0 } };
+  SPixMap sRefMap = { { 0 } };
   SRefJudgement sLtrJudgement;
   SRefJudgement sSceneLtrJudgement;
   SRefInfoParam sLtrSaved = {0};
@@ -1030,7 +1030,7 @@ ESceneChangeIdc CWelsPreProcess::DetectSceneChangeScreen (sWelsEncCtx* pCtx, SPi
   int32_t iNumOfLargeChange = 0, iNumOfMediumChangeToLtr = 0;
 
   bool bBestRefIsLtr = false, bIsClosestLtrFrame = false;
-  int32_t ret = 1, iScdIdx = 0, i = 0;
+  int32_t ret = 1, iScdIdx = 0;
 
   SPicture* pRefPic = NULL;
   SRefInfoParam* pRefPicInfo = NULL;