diff --git a/src/wallet.cpp b/src/wallet.cpp
index 400c966a95..3176cf893a 100644
--- a/src/wallet.cpp
+++ b/src/wallet.cpp
@@ -1028,7 +1028,7 @@ void CWallet::AvailableCoins(vector<COutput>& vCoins, bool fOnlyConfirmed, const
     vCoins.clear();
 
     {
-        LOCK(cs_wallet);
+        LOCK2(cs_main, cs_wallet);
         for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
         {
             const uint256& wtxid = it->first;