diff --git a/src/plugins/qmldesigner/components/curveeditor/curveeditorstyle.h b/src/plugins/qmldesigner/components/curveeditor/curveeditorstyle.h
index 3eda30dfcdc..f6c6c378c59 100644
--- a/src/plugins/qmldesigner/components/curveeditor/curveeditorstyle.h
+++ b/src/plugins/qmldesigner/components/curveeditor/curveeditorstyle.h
@@ -36,6 +36,8 @@
 #include <QIcon>
 #include <QKeySequence>
 
+#include <cmath>
+
 namespace DesignTools {
 
 struct TreeItemStyleOption