diff --git a/src/osdclock.cpp b/src/osdclock.cpp
index 8d19e50..1724522 100644
--- a/src/osdclock.cpp
+++ b/src/osdclock.cpp
@@ -116,7 +116,7 @@ void OsdClockEffect::reconfigure(ReconfigureFlags)
     effects->addRepaintFull();
 }
 
-void OsdClockEffect::prePaintScreen(ScreenPrePaintData& data, int time)
+void OsdClockEffect::prePaintScreen(ScreenPrePaintData &data, std::chrono::milliseconds time)
 {
     effects->prePaintScreen(data, time);
     data.paint += clockTextRect;
diff --git a/src/osdclock.h b/src/osdclock.h
index a8c7ba0..4c04e3c 100644
--- a/src/osdclock.h
+++ b/src/osdclock.h
@@ -44,7 +44,7 @@ class OsdClockEffect
 public:
     OsdClockEffect();
     virtual void reconfigure(ReconfigureFlags);
-    virtual void prePaintScreen(KWin::ScreenPrePaintData& data, int time);
+    virtual void prePaintScreen(KWin::ScreenPrePaintData &data, std::chrono::milliseconds time);
     virtual void paintScreen(int mask, const QRegion &region, KWin::ScreenPaintData& data);
     virtual void paintWindow(KWin::EffectWindow* w, int mask, const QRegion &region, KWin::WindowPaintData& data);
     virtual void postPaintScreen();