diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -10,6 +10,7 @@
 
 #include <chain.h>
 #include <chainparams.h>
+#include <config.h>
 #include <init.h>
 #include <interfaces/handler.h>
 #include <interfaces/node.h>
@@ -712,7 +713,7 @@
 
 #ifdef ENABLE_WALLET
 void BitcoinGUI::openClicked() {
-    OpenURIDialog dlg(config, this);
+    OpenURIDialog dlg(config->GetChainParams(), this);
     if (dlg.exec()) {
         Q_EMIT receivedURI(dlg.getURI());
     }
diff --git a/src/qt/guiutil.cpp b/src/qt/guiutil.cpp
--- a/src/qt/guiutil.cpp
+++ b/src/qt/guiutil.cpp
@@ -4,7 +4,6 @@
 
 #include <qt/guiutil.h>
 
-#include <base58.h>
 #include <cashaddr.h>
 #include <chainparams.h>
 #include <config.h>
diff --git a/src/qt/openuridialog.h b/src/qt/openuridialog.h
--- a/src/qt/openuridialog.h
+++ b/src/qt/openuridialog.h
@@ -7,7 +7,7 @@
 
 #include <QDialog>
 
-class Config;
+class CChainParams;
 
 namespace Ui {
 class OpenURIDialog;
@@ -17,7 +17,7 @@
     Q_OBJECT
 
 public:
-    explicit OpenURIDialog(const Config *configIn, QWidget *parent);
+    explicit OpenURIDialog(const CChainParams &params, QWidget *parent);
     ~OpenURIDialog();
 
     QString getURI();
@@ -30,7 +30,7 @@
 
 private:
     Ui::OpenURIDialog *ui;
-    const Config *config;
+    const QString uriScheme;
 };
 
 #endif // BITCOIN_QT_OPENURIDIALOG_H
diff --git a/src/qt/openuridialog.cpp b/src/qt/openuridialog.cpp
--- a/src/qt/openuridialog.cpp
+++ b/src/qt/openuridialog.cpp
@@ -5,15 +5,17 @@
 #include <qt/forms/ui_openuridialog.h>
 #include <qt/openuridialog.h>
 
+#include <chainparams.h>
 #include <qt/guiutil.h>
 #include <qt/walletmodel.h>
 
 #include <QUrl>
 
-OpenURIDialog::OpenURIDialog(const Config *configIn, QWidget *parent)
-    : QDialog(parent), ui(new Ui::OpenURIDialog), config(configIn) {
+OpenURIDialog::OpenURIDialog(const CChainParams &params, QWidget *parent)
+    : QDialog(parent), ui(new Ui::OpenURIDialog),
+      uriScheme(QString::fromStdString(params.CashAddrPrefix())) {
     ui->setupUi(this);
-    ui->uriEdit->setPlaceholderText(GUIUtil::bitcoinURIScheme(*config) + ":");
+    ui->uriEdit->setPlaceholderText(uriScheme + ":");
 }
 
 OpenURIDialog::~OpenURIDialog() {
@@ -26,7 +28,6 @@
 
 void OpenURIDialog::accept() {
     SendCoinsRecipient rcp;
-    QString uriScheme = GUIUtil::bitcoinURIScheme(*config);
     if (GUIUtil::parseBitcoinURI(uriScheme, getURI(), &rcp)) {
         /* Only accept value URIs */
         QDialog::accept();
@@ -38,8 +39,10 @@
 void OpenURIDialog::on_selectFileButton_clicked() {
     QString filename = GUIUtil::getOpenFileName(
         this, tr("Select payment request file to open"), "", "", nullptr);
-    if (filename.isEmpty()) return;
+    if (filename.isEmpty()) {
+        return;
+    }
     QUrl fileUri = QUrl::fromLocalFile(filename);
-    ui->uriEdit->setText(GUIUtil::bitcoinURIScheme(*config) +
+    ui->uriEdit->setText(uriScheme +
                          ":?r=" + QUrl::toPercentEncoding(fileUri.toString()));
 }