diff --git a/components/slider.h b/components/slider.h
index 7c1eb7b..b95d718 100644
--- a/components/slider.h
+++ b/components/slider.h
@@ -4,6 +4,8 @@
 #include <QAbstractSlider>
 #include <QScopedPointer>
 
+#define SLIDER_MARGIN 30
+
 class SliderPrivate;
 
 class Slider : public QAbstractSlider
diff --git a/components/sliderthumb.h b/components/sliderthumb.h
index a1cd46e..3d7cfbe 100644
--- a/components/sliderthumb.h
+++ b/components/sliderthumb.h
@@ -1,8 +1,6 @@
 #ifndef SLIDERTHUMB_H
 #define SLIDERTHUMB_H
 
-#define SLIDER_MARGIN 30
-
 #include <QWidget>
 
 class Slider;