diff --git a/client/ui/controllers/installController.cpp b/client/ui/controllers/installController.cpp
index 0a0b0e2f..537eedc0 100644
--- a/client/ui/controllers/installController.cpp
+++ b/client/ui/controllers/installController.cpp
@@ -136,10 +136,10 @@ void InstallController::install(DockerContainer container, int port, TransportPr
                 containerConfig[config_key::transportPacketMagicHeader] = transportPacketMagicHeader;
             } else if (container == DockerContainer::Sftp) {
                 containerConfig.insert(config_key::userName, protocols::sftp::defaultUserName);
-                containerConfig.insert(config_key::password, Utils::getRandomString(10));
+                containerConfig.insert(config_key::password, Utils::getRandomString(16));
             } else if (container == DockerContainer::Socks5Proxy) {
                 containerConfig.insert(config_key::userName, protocols::socks5Proxy::defaultUserName);
-                containerConfig.insert(config_key::password, Utils::getRandomString(10));
+                containerConfig.insert(config_key::password, Utils::getRandomString(16));
             }
 
             config.insert(config_key::container, ContainerProps::containerToString(container));
diff --git a/client/utilities.cpp b/client/utilities.cpp
index 731781b5..66aa6e7a 100644
--- a/client/utilities.cpp
+++ b/client/utilities.cpp
@@ -14,14 +14,13 @@
 
 QString Utils::getRandomString(int len)
 {
-    const QString possibleCharacters("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");
-
+    const QString possibleCharacters = QStringLiteral("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");
     QString randomString;
+
     for (int i = 0; i < len; ++i) {
-        quint32 index = QRandomGenerator::global()->generate() % possibleCharacters.length();
-        QChar nextChar = possibleCharacters.at(index);
-        randomString.append(nextChar);
+        randomString.append(possibleCharacters.at(QRandomGenerator::system()->bounded(possibleCharacters.length())));
     }
+
     return randomString;
 }