diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 03d8c9722..148ebe30e 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -376,7 +376,7 @@ void CWallet::ChainTip(const CBlockIndex *pindex, const CBlock *pblock,
         IncrementNoteWitnesses(pindex, pblock, tree);
     } else if ( ASSETCHAINS_SYMBOL[0] == 0 || nWitnessCacheSize > 1 ){
         DecrementNoteWitnesses(pindex);
-    } else fprintf(stderr,"would have decremented %s nWitnessCacheSize.%d\n",ASSETCHAINS_SYMBOL,nWitnessCacheSize);
+    } else fprintf(stderr,"would have decremented %s nWitnessCacheSize.%d\n",ASSETCHAINS_SYMBOL,(int32_t)nWitnessCacheSize);
 }
 
 void CWallet::SetBestChain(const CBlockLocator& loc)