diff -Nru a/src/application/splashdialog.cpp 
b/src/application/splashdialog.cpp
--- a/src/application/splashdialog.cpp	2017-10-13 00:32:54.000000000 
+0200
+++ b/src/application/splashdialog.cpp	2018-06-01 03:45:40.631194527 
+0200
@@ -24,6 +24,7 @@
 
 #include <QApplication>
 #include <QDesktopWidget>
+#include <QStyle>
 
 #include "splashdialog.h"