diff --git a/src/wallet/asyncrpcoperation_mergetoaddress.cpp b/src/wallet/asyncrpcoperation_mergetoaddress.cpp
index 30ef560df..215cb3bcf 100644
--- a/src/wallet/asyncrpcoperation_mergetoaddress.cpp
+++ b/src/wallet/asyncrpcoperation_mergetoaddress.cpp
@@ -825,10 +825,10 @@ UniValue AsyncRPCOperation_mergetoaddress::perform_joinsplit(
     UniValue arrInputMap(UniValue::VARR);
     UniValue arrOutputMap(UniValue::VARR);
     for (size_t i = 0; i < ZC_NUM_JS_INPUTS; i++) {
-        arrInputMap.push_back(inputMap[i]);
+        arrInputMap.push_back(static_cast<uint64_t>(inputMap[i]));
     }
     for (size_t i = 0; i < ZC_NUM_JS_OUTPUTS; i++) {
-        arrOutputMap.push_back(outputMap[i]);
+        arrOutputMap.push_back(static_cast<uint64_t>(outputMap[i]));
     }
 
 
diff --git a/src/wallet/asyncrpcoperation_sendmany.cpp b/src/wallet/asyncrpcoperation_sendmany.cpp
index 8181bdc3b..b9d258d04 100644
--- a/src/wallet/asyncrpcoperation_sendmany.cpp
+++ b/src/wallet/asyncrpcoperation_sendmany.cpp
@@ -1050,10 +1050,10 @@ UniValue AsyncRPCOperation_sendmany::perform_joinsplit(
     UniValue arrInputMap(UniValue::VARR);
     UniValue arrOutputMap(UniValue::VARR);
     for (size_t i = 0; i < ZC_NUM_JS_INPUTS; i++) {
-        arrInputMap.push_back(inputMap[i]);
+        arrInputMap.push_back(static_cast<uint64_t>(inputMap[i]));
     }
     for (size_t i = 0; i < ZC_NUM_JS_OUTPUTS; i++) {
-        arrOutputMap.push_back(outputMap[i]);
+        arrOutputMap.push_back(static_cast<uint64_t>(outputMap[i]));
     }
 
 
diff --git a/src/wallet/asyncrpcoperation_shieldcoinbase.cpp b/src/wallet/asyncrpcoperation_shieldcoinbase.cpp
index 527f810bc..82d5b97bc 100644
--- a/src/wallet/asyncrpcoperation_shieldcoinbase.cpp
+++ b/src/wallet/asyncrpcoperation_shieldcoinbase.cpp
@@ -423,10 +423,10 @@ UniValue AsyncRPCOperation_shieldcoinbase::perform_joinsplit(ShieldCoinbaseJSInf
     UniValue arrInputMap(UniValue::VARR);
     UniValue arrOutputMap(UniValue::VARR);
     for (size_t i = 0; i < ZC_NUM_JS_INPUTS; i++) {
-        arrInputMap.push_back(inputMap[i]);
+        arrInputMap.push_back(static_cast<uint64_t>(inputMap[i]));
     }
     for (size_t i = 0; i < ZC_NUM_JS_OUTPUTS; i++) {
-        arrOutputMap.push_back(outputMap[i]);
+        arrOutputMap.push_back(static_cast<uint64_t>(outputMap[i]));
     }
 
     // !!! Payment disclosure START