diff --git a/src/qt/qt_vmmanager_system.cpp b/src/qt/qt_vmmanager_system.cpp
index 7ab7e43ca..0a7382094 100644
--- a/src/qt/qt_vmmanager_system.cpp
+++ b/src/qt/qt_vmmanager_system.cpp
@@ -719,7 +719,7 @@ VMManagerSystem::setupVars() {
     // Serial
     // By default serial 1 and 2 are enabled unless otherwise specified
     static auto serial_match = QRegularExpression("serial\\d_enabled", QRegularExpression::CaseInsensitiveOption);
-    QList<bool> serial_enabled = {true, true, false, false};
+    QList<bool> serial_enabled = {true, true, false, false, false, false, false, false};
     // Parallel
     // By default lpt 1 is enabled unless otherwise specified
     static auto lpt_match = QRegularExpression("lpt\\d_enabled", QRegularExpression::CaseInsensitiveOption);