diff --git a/codec/encoder/core/src/wels_preprocess.cpp b/codec/encoder/core/src/wels_preprocess.cpp
index 24d0d93a..ab2de119 100644
--- a/codec/encoder/core/src/wels_preprocess.cpp
+++ b/codec/encoder/core/src/wels_preprocess.cpp
@@ -38,7 +38,6 @@
 
 namespace WelsEnc {
 
-#define WelsSafeDelete(p) if(p){ delete (p); (p) = NULL; }
 
 
 //***** entry API declaration ************************************************************************//