diff --git a/MdePkg/Include/Base.h b/MdePkg/Include/Base.h
index 85a091b9d5..8e4271f6ea 100644
--- a/MdePkg/Include/Base.h
+++ b/MdePkg/Include/Base.h
@@ -1273,7 +1273,6 @@ typedef UINTN RETURN_STATUS;
   **/
   #define RETURN_ADDRESS(L)     ((L == 0) ? _ReturnAddress() : (VOID *) 0)
 #elif defined (__GNUC__) || defined (__clang__)
-  void * __builtin_return_address (unsigned int level);
   /**
     Get the return address of the calling function.