diff --git a/src/main.cpp b/src/main.cpp
index 357ab696b76..beb788aa4d9 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1610,7 +1610,7 @@ bool CBlock::ConnectBlock(CBlockIndex* pindex, CCoinsViewCache &view, bool fJust
     }
 
     if (vtx[0].GetValueOut() > GetBlockValue(pindex->nHeight, nFees))
-        return error("ConnectBlock() : coinbase pays too much (actual=%lld vs limit=%lld)", (long long)vtx[0].GetValueOut(), (long long)GetBlockValue(pindex->nHeight, nFees));
+        return error("ConnectBlock() : coinbase pays too much (actual=%"PRI64u" vs limit=%"PRI64u")", vtx[0].GetValueOut(), GetBlockValue(pindex->nHeight, nFees));
 
     if (fJustCheck)
         return true;