diff --git a/src/libs/vwidgets/fancytabbar/stylehelper.cpp b/src/libs/vwidgets/fancytabbar/stylehelper.cpp
index b6310f2d5..24d386f58 100644
--- a/src/libs/vwidgets/fancytabbar/stylehelper.cpp
+++ b/src/libs/vwidgets/fancytabbar/stylehelper.cpp
@@ -37,6 +37,7 @@
 #include <QRect>
 #include <QStyleOption>
 #include <QWidget>
+#include <QtMath>
 
 //---------------------------------------------------------------------------------------------------------------------
 auto StyleHelper::sidebarFontSize() -> qreal