diff --git a/libs/ui/dialogs/kis_about_application.cpp b/libs/ui/dialogs/kis_about_application.cpp
--- a/libs/ui/dialogs/kis_about_application.cpp
+++ b/libs/ui/dialogs/kis_about_application.cpp
@@ -198,17 +198,15 @@
     }
     wdgTab->addTab(lblThirdParty, i18n("Third-party libraries"));
 
-
     QPushButton *bnClose = new QPushButton(i18n("Close"));
+    bnClose->setIcon(QIcon::fromTheme(QStringLiteral("dialog-close")));
     connect(bnClose, SIGNAL(clicked()), SLOT(close()));
 
     QHBoxLayout *hlayout = new QHBoxLayout;
     hlayout->setMargin(10);
     hlayout->addStretch(10);
     hlayout->addWidget(bnClose);
 
-
-
     vlayout->addLayout(hlayout);
 
 }