diff --git a/dialog.cpp b/dialog.cpp
index 7c2d7f1..6c3de8a 100644
--- a/dialog.cpp
+++ b/dialog.cpp
@@ -43,7 +43,7 @@ void Dialog::updateUi()
     for (unsigned int i = 0; i < (*sockets).size(); ++i) {
         ui->socketsComboBox->setItemText(i, (*sockets)[i]->socketName);
     }
-    unsigned int index = ui->socketsComboBox->currentIndex();
+    int index = ui->socketsComboBox->currentIndex();
     if (index != -1) {
         ui->toggleButton->setEnabled(true);
         ui->offTimerEnabled->setEnabled(true);