diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -247,7 +247,7 @@
     ui->actionEdit->setIcon(QIcon::fromTheme(QStringLiteral("document-properties")));
     ui->actionDelete->setIcon(QIcon::fromTheme(QStringLiteral("edit-delete")));
     ui->actionUsers->setIcon(QIcon::fromTheme(QStringLiteral("x-office-address-book")));
-    ui->actionConfig->setIcon(QIcon::fromTheme(QStringLiteral("applications-system")));
+    ui->actionConfig->setIcon(QIcon::fromTheme(QStringLiteral("configure-symbolic")));
 }
 
 /**