diff --git a/contracts/eosiolib/eosiolib.cpp b/contracts/eosiolib/eosiolib.cpp
index d72f79e30a3..7a7f7b1b672 100644
--- a/contracts/eosiolib/eosiolib.cpp
+++ b/contracts/eosiolib/eosiolib.cpp
@@ -202,7 +202,6 @@ namespace eosio {
          {
             _heap_size = size;
             _heap = mem_heap;
-            memset(_heap, 0, _heap_size);
          }
 
          uint32_t is_init() const