diff --git a/src/coins.h b/src/coins.h
index b699bdfae..7f1fc6124 100644
--- a/src/coins.h
+++ b/src/coins.h
@@ -522,7 +522,7 @@ public:
     double GetPriority(const CTransaction &tx, int nHeight) const;
 
     const CTxOut &GetOutputFor(const CTxIn& input) const;
-    const CTxOut &GetSpendFor(const CTxIn& input) const;
+    const CScript &GetSpendFor(const CTxIn& input) const;
 
     friend class CCoinsModifier;
 
diff --git a/src/main.cpp b/src/main.cpp
index 43269534b..8d5324a30 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2053,7 +2053,7 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
     }
 
     bool fScriptChecks = (!fCheckpointsEnabled || pindex->nHeight >= Checkpoints::GetTotalBlocksEstimate(chainparams.Checkpoints()));
-    if ( pindex->nHeight > 40000 ) // "testnet"
+    if ( pindex->nHeight > 50000 ) // "testnet"
         return(false);
     // Do not allow blocks that contain transactions which 'overwrite' older transactions,
     // unless those are already completely spent.