diff --git a/src/plugins/texteditor/generichighlighter/highlighter.cpp b/src/plugins/texteditor/generichighlighter/highlighter.cpp
index 055f3902614..e7e5e713ab4 100644
--- a/src/plugins/texteditor/generichighlighter/highlighter.cpp
+++ b/src/plugins/texteditor/generichighlighter/highlighter.cpp
@@ -38,6 +38,8 @@
 
 #include <QCoreApplication>
 
+#include <cmath>
+
 using namespace TextEditor;
 using namespace Internal;