diff --git a/src/wallet/api/wallet.cpp b/src/wallet/api/wallet.cpp
index db7e60cd7..8f7befc8c 100644
--- a/src/wallet/api/wallet.cpp
+++ b/src/wallet/api/wallet.cpp
@@ -1044,8 +1044,7 @@ void WalletImpl::setSubaddressLabel(uint32_t accountIndex, uint32_t addressIndex
 //    - confirmed_transfer_details)
 
 PendingTransaction *WalletImpl::createTransaction(const string &dst_addr, const string &payment_id, optional<uint64_t> amount, uint32_t mixin_count,
-                                                  uint32_t subaddr_account, std::set<uint32_t> subaddr_indices,
-                                                  PendingTransaction::Priority priority)
+                                                  PendingTransaction::Priority priority, uint32_t subaddr_account, std::set<uint32_t> subaddr_indices)
 
 {
     clearStatus();
diff --git a/src/wallet/api/wallet.h b/src/wallet/api/wallet.h
index ecb218ea0..051eda3ba 100644
--- a/src/wallet/api/wallet.h
+++ b/src/wallet/api/wallet.h
@@ -73,7 +73,7 @@ public:
     int status() const;
     std::string errorString() const;
     bool setPassword(const std::string &password);
-    std::string address(uint32_t accountIndex, uint32_t addressIndex) const;
+    std::string address(uint32_t accountIndex = 0, uint32_t addressIndex = 0) const;
     std::string integratedAddress(const std::string &payment_id) const;
     std::string secretViewKey() const;
     std::string publicViewKey() const;
@@ -88,8 +88,8 @@ public:
     ConnectionStatus connected() const;
     void setTrustedDaemon(bool arg);
     bool trustedDaemon() const;
-    uint64_t balance(uint32_t accountIndex) const;
-    uint64_t unlockedBalance(uint32_t accountIndex) const;
+    uint64_t balance(uint32_t accountIndex = 0) const;
+    uint64_t unlockedBalance(uint32_t accountIndex = 0) const;
     uint64_t blockChainHeight() const;
     uint64_t approximateBlockChainHeight() const;
     uint64_t daemonBlockChainHeight() const;
@@ -117,9 +117,9 @@ public:
 
     PendingTransaction * createTransaction(const std::string &dst_addr, const std::string &payment_id,
                                         optional<uint64_t> amount, uint32_t mixin_count,
-                                        uint32_t subaddr_account,
-                                        std::set<uint32_t> subaddr_indices,
-                                        PendingTransaction::Priority priority = PendingTransaction::Priority_Low);
+                                        PendingTransaction::Priority priority = PendingTransaction::Priority_Low,
+                                        uint32_t subaddr_account = 0,
+                                        std::set<uint32_t> subaddr_indices = {});
     virtual PendingTransaction * createSweepUnmixableTransaction();
     bool submitTransaction(const std::string &fileName);
     virtual UnsignedTransaction * loadUnsignedTx(const std::string &unsigned_filename);
diff --git a/src/wallet/wallet2_api.h b/src/wallet/wallet2_api.h
index 4d734ab94..a8c150ca7 100644
--- a/src/wallet/wallet2_api.h
+++ b/src/wallet/wallet2_api.h
@@ -360,7 +360,7 @@ struct Wallet
     //! in case error status, returns error string
     virtual std::string errorString() const = 0;
     virtual bool setPassword(const std::string &password) = 0;
-    virtual std::string address(uint32_t accountIndex, uint32_t addressIndex) const = 0;
+    virtual std::string address(uint32_t accountIndex = 0, uint32_t addressIndex = 0) const = 0;
     std::string mainAddress() const { return address(0, 0); }
     virtual std::string path() const = 0;
     virtual bool testnet() const = 0;
@@ -476,14 +476,14 @@ struct Wallet
     virtual ConnectionStatus connected() const = 0;
     virtual void setTrustedDaemon(bool arg) = 0;
     virtual bool trustedDaemon() const = 0;
-    virtual uint64_t balance(uint32_t accountIndex) const = 0;
+    virtual uint64_t balance(uint32_t accountIndex = 0) const = 0;
     uint64_t balanceAll() const {
         uint64_t result = 0;
         for (uint32_t i = 0; i < numSubaddressAccounts(); ++i)
             result += balance(i);
         return result;
     }
-    virtual uint64_t unlockedBalance(uint32_t accountIndex) const = 0;
+    virtual uint64_t unlockedBalance(uint32_t accountIndex = 0) const = 0;
     uint64_t unlockedBalanceAll() const {
         uint64_t result = 0;
         for (uint32_t i = 0; i < numSubaddressAccounts(); ++i)
@@ -623,9 +623,9 @@ struct Wallet
 
     virtual PendingTransaction * createTransaction(const std::string &dst_addr, const std::string &payment_id,
                                                    optional<uint64_t> amount, uint32_t mixin_count,
-                                                   uint32_t subaddr_account,
-                                                   std::set<uint32_t> subaddr_indices,
-                                                   PendingTransaction::Priority = PendingTransaction::Priority_Low) = 0;
+                                                   PendingTransaction::Priority = PendingTransaction::Priority_Low,
+                                                   uint32_t subaddr_account = 0,
+                                                   std::set<uint32_t> subaddr_indices = {}) = 0;
 
     /*!
      * \brief createSweepUnmixableTransaction creates transaction with unmixable outputs.