diff --git a/src/init.cpp b/src/init.cpp
index b20675dd9..cb8da06d6 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -951,7 +951,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     if (mapArgs.count("-minrelaytxfee"))
     {
         CAmount n = 0;
-        if (!ParseMoney(mapArgs["-minrelaytxfee"], n))
+        if (!ParseMoney(mapArgs["-minrelaytxfee"], n) || 0 == n)
             return InitError(AmountErrMsg("minrelaytxfee", mapArgs["-minrelaytxfee"]));
         // High fee check is done afterward in CWallet::ParameterInteraction()
         ::minRelayTxFee = CFeeRate(n);
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 50d63182a..a5bfde659 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -3492,7 +3492,7 @@ bool CWallet::ParameterInteraction()
     if (mapArgs.count("-mintxfee"))
     {
         CAmount n = 0;
-        if (!ParseMoney(mapArgs["-mintxfee"], n))
+        if (!ParseMoney(mapArgs["-mintxfee"], n) || 0 == n)
             return InitError(AmountErrMsg("mintxfee", mapArgs["-mintxfee"]));
         if (n > HIGH_TX_FEE_PER_KB)
             InitWarning(AmountHighWarn("-mintxfee") + " " +