diff --git a/lib/jkqtcommon/jkqtpstringtools.cpp b/lib/jkqtcommon/jkqtpstringtools.cpp
index eee2e77d03..3d01ef91b9 100644
--- a/lib/jkqtcommon/jkqtpstringtools.cpp
+++ b/lib/jkqtcommon/jkqtpstringtools.cpp
@@ -25,6 +25,7 @@
 #include <QDebug>
 #include <QSet>
 #include <QGuiApplication>
+#include <QtMath>
 #include <QPalette>
 #include <QLocale>
 #include <cstring>