diff --git a/effects/startupfeedback/startupfeedback.cpp b/effects/startupfeedback/startupfeedback.cpp
index 89f669e4d6..45f0f5cffb 100644
--- a/effects/startupfeedback/startupfeedback.cpp
+++ b/effects/startupfeedback/startupfeedback.cpp
@@ -146,11 +146,11 @@ void StartupFeedbackEffect::prePaintScreen( ScreenPrePaintData& data, int time )
             {
         case BouncingFeedback:
             m_progress = (m_progress + time) % BOUNCE_DURATION;
-            m_frame = qRound( (qreal)m_progress / (qreal)BOUNCE_FRAME_DURATION );
+            m_frame = qRound( (qreal)m_progress / (qreal)BOUNCE_FRAME_DURATION ) % BOUNCE_FRAMES;
             break;
         case BlinkingFeedback:
             m_progress = (m_progress + time) % BLINKING_DURATION;
-            m_frame = qRound( (qreal)m_progress / (qreal)BLINKING_FRAME_DURATION );
+            m_frame = qRound( (qreal)m_progress / (qreal)BLINKING_FRAME_DURATION ) % BLINKING_FRAMES;
             break;
         default:
             break; // nothing