diff --git a/src/miner.cpp b/src/miner.cpp
index feb86cab6..96c9cd6d2 100644
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -70,9 +70,8 @@ static BlockAssembler::Options DefaultOptions()
     // If -blockmaxweight is not given, limit to DEFAULT_BLOCK_MAX_WEIGHT
     BlockAssembler::Options options;
     options.nBlockMaxWeight = gArgs.GetArg("-blockmaxweight", DEFAULT_BLOCK_MAX_WEIGHT);
-    if (gArgs.IsArgSet("-blockmintxfee")) {
-        CAmount n = 0;
-        ParseMoney(gArgs.GetArg("-blockmintxfee", ""), n);
+    CAmount n = 0;
+    if (gArgs.IsArgSet("-blockmintxfee") && ParseMoney(gArgs.GetArg("-blockmintxfee", ""), n)) {
         options.blockMinFeeRate = CFeeRate(n);
     } else {
         options.blockMinFeeRate = CFeeRate(DEFAULT_BLOCK_MIN_TX_FEE);