diff --git a/connector/utils.cpp b/connector/utils.cpp
index 8dc33ec..46872a6 100644
--- a/connector/utils.cpp
+++ b/connector/utils.cpp
@@ -104,12 +104,19 @@ QString rescanIntervalString(int rescanInterval, bool fileSystemWatcherEnabled)
 }
 
 /*!
- * \brief Returns whether the specified \a hostname is the local machine.
+ * \brief Returns whether the specified \a hostName is the local machine.
  */
-bool isLocal(const QString &hostname)
+bool isLocal(const QString &hostName)
 {
-    const QHostAddress hostAddress(hostname);
-    return hostname.compare(QLatin1String("localhost"), Qt::CaseInsensitive) == 0 || hostAddress.isLoopback()
+    return isLocal(hostName, QHostAddress(hostName));
+}
+
+/*!
+ * \brief Returns whether the specified \a hostName and \a hostAddress are the local machine.
+ */
+bool isLocal(const QString &hostName, const QHostAddress &hostAddress)
+{
+    return hostName.compare(QLatin1String("localhost"), Qt::CaseInsensitive) == 0 || hostAddress.isLoopback()
         || QNetworkInterface::allAddresses().contains(hostAddress);
 }
 
diff --git a/connector/utils.h b/connector/utils.h
index dc27ab1..54777b2 100644
--- a/connector/utils.h
+++ b/connector/utils.h
@@ -14,6 +14,7 @@
 #include <vector>
 
 QT_FORWARD_DECLARE_CLASS(QJsonObject)
+QT_FORWARD_DECLARE_CLASS(QHostAddress)
 
 namespace ChronoUtilities {
 class DateTime;
@@ -31,7 +32,8 @@ QString LIB_SYNCTHING_CONNECTOR_EXPORT directoryStatusString(const Data::Syncthi
 QString LIB_SYNCTHING_CONNECTOR_EXPORT syncCompleteString(
     const std::vector<const SyncthingDir *> &completedDirs, const SyncthingDev *remoteDevice = nullptr);
 QString LIB_SYNCTHING_CONNECTOR_EXPORT rescanIntervalString(int rescanInterval, bool fileSystemWatcherEnabled);
-bool LIB_SYNCTHING_CONNECTOR_EXPORT isLocal(const QString &hostname);
+bool LIB_SYNCTHING_CONNECTOR_EXPORT isLocal(const QString &hostName);
+bool LIB_SYNCTHING_CONNECTOR_EXPORT isLocal(const QString &hostName, const QHostAddress &hostAddress);
 bool LIB_SYNCTHING_CONNECTOR_EXPORT setDirectoriesPaused(QJsonObject &syncthingConfig, const QStringList &dirIds, bool paused);
 bool LIB_SYNCTHING_CONNECTOR_EXPORT setDevicesPaused(QJsonObject &syncthingConfig, const QStringList &dirs, bool paused);
 
diff --git a/widgets/settings/settingsdialog.cpp b/widgets/settings/settingsdialog.cpp
index f7b26ba..cb9c469 100644
--- a/widgets/settings/settingsdialog.cpp
+++ b/widgets/settings/settingsdialog.cpp
@@ -5,6 +5,7 @@
 #include "../../connector/syncthingconfig.h"
 #include "../../connector/syncthingconnection.h"
 #include "../../connector/syncthingprocess.h"
+#include "../../connector/utils.h"
 #ifdef LIB_SYNCTHING_CONNECTOR_SUPPORT_SYSTEMD
 #include "../../connector/syncthingservice.h"
 #include "../../model/colors.h"
@@ -111,13 +112,25 @@ void ConnectionOptionPage::insertFromConfigFile()
             QCoreApplication::translate("QtGui::ConnectionOptionPage", "Unable to parse the Syncthing config file."));
         return;
     }
+
     if (!config.guiAddress.isEmpty()) {
+        const auto portStart(config.guiAddress.indexOf(QChar(':')));
+        QString guiHost(config.guiAddress.mid(0, portStart));
+        const QStringRef guiPort(portStart > 0 ? config.guiAddress.midRef(portStart) : QStringRef());
+        const QHostAddress guiAddress(guiHost);
+        // assume local connection if address is eg. 0.0.0.0
+        auto localConnection = true;
+        if (guiAddress == QHostAddress::AnyIPv4) {
+            guiHost = QStringLiteral("127.0.0.1");
+        } else if (guiAddress == QHostAddress::AnyIPv6) {
+            guiHost = QStringLiteral("[::1]");
+        } else if (!isLocal(guiHost, guiAddress)) {
+            localConnection = false;
+        }
+        const QString guiProtocol((config.guiEnforcesSecureConnection || !localConnection) ? QStringLiteral("https://") : QStringLiteral("http://"));
+
         ui()->urlLineEdit->selectAll();
-        ui()->urlLineEdit->insert(
-            ((config.guiEnforcesSecureConnection || !QHostAddress(config.guiAddress.mid(0, config.guiAddress.indexOf(QChar(':')))).isLoopback())
-                    ? QStringLiteral("https://")
-                    : QStringLiteral("http://"))
-            + config.guiAddress);
+        ui()->urlLineEdit->insert(guiProtocol % guiHost % guiPort);
     }
     if (!config.guiUser.isEmpty() || !config.guiPasswordHash.isEmpty()) {
         ui()->authCheckBox->setChecked(true);