diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 7334cf3..ea7f52a 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -181,7 +181,7 @@ void MainWindow::restoreSavedStates() {
     // Explicitly set the tx table resize headers, since some previous values may have made them
     // non-expandable.
     ui->transactionsTable->horizontalHeader()->setSectionResizeMode(3, QHeaderView::Interactive);
-    ui->transactionsTable->horizontalHeader()->setSectionResizeMode(4, QHeaderView::Stretch);
+    ui->transactionsTable->horizontalHeader()->setSectionResizeMode(4, QHeaderView::Interactive);
 }
 
 void MainWindow::doClose() {
diff --git a/src/rpc.cpp b/src/rpc.cpp
index 35a073b..ec5bd8d 100644
--- a/src/rpc.cpp
+++ b/src/rpc.cpp
@@ -219,7 +219,7 @@ void RPC::importTPrivKey(QString addr, bool rescan, const std::function<void(jso
 }
 
 void RPC::validateAddress(QString address, const std::function<void(json)>& cb) {
-    QString method = address.startsWith("z") ? "z_validateaddress" : "validateaddress";
+    QString method = Settings::isZAddress(address) ? "z_validateaddress" : "validateaddress";
 
     json payload = {
         {"jsonrpc", "1.0"},