diff --git a/src/main.cpp b/src/main.cpp
index d604b4eec..7634226f4 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1606,8 +1606,7 @@ bool GetAddressUnspent(uint160 addressHash, int type,
 uint64_t myGettxout(uint256 hash,int32_t n)
 {
     CCoins coins;
-    LOCK(cs_main);
-    LOCK(mempool.cs);
+    LOCK2(cs_main,mempool.cs);
     CCoinsViewMemPool view(pcoinsTip, mempool);
     if (!view.GetCoins(hash, coins))
         return(0);