diff --git a/codec/encoder/plus/src/welsEncoderExt.cpp b/codec/encoder/plus/src/welsEncoderExt.cpp
index 41ef05f5e8..636c0cc609 100644
--- a/codec/encoder/plus/src/welsEncoderExt.cpp
+++ b/codec/encoder/plus/src/welsEncoderExt.cpp
@@ -1092,7 +1092,7 @@ int CWelsH264SVCEncoder::SetOption (ENCODER_OPTION eOptionId, void* pOption) {
   break;
   case ENCODER_OPTION_TRACE_CALLBACK: {
     if (m_pWelsTrace) {
-      WelsTraceCallback callback = (WelsTraceCallback)pOption;
+      WelsTraceCallback callback = * ((WelsTraceCallback*)pOption);
       m_pWelsTrace->SetTraceCallback (callback);
       WelsLog (&m_pWelsTrace->m_sLogCtx, WELS_LOG_INFO,
                "CWelsH264SVCEncoder::SetOption():ENCODER_OPTION_TRACE_CALLBACK callback = %p.",