diff --git a/mythtv/libs/libmythtv/visualisations/videovisual.cpp b/mythtv/libs/libmythtv/visualisations/videovisual.cpp
index 471b4b5defe..09f95358eb0 100644
--- a/mythtv/libs/libmythtv/visualisations/videovisual.cpp
+++ b/mythtv/libs/libmythtv/visualisations/videovisual.cpp
@@ -57,7 +57,7 @@ VideoVisual::~VideoVisual()
 int64_t VideoVisual::SetLastUpdate(void)
 {
     QDateTime now = QDateTime::currentDateTime();
-    int64_t result = m_lastUpdate.msecsTo(now);
+    int64_t result = m_lastUpdate.time().msecsTo(now.time());
     m_lastUpdate = now;
     return result;
 }
diff --git a/mythtv/libs/libmythtv/visualisations/videovisualspectrum.cpp b/mythtv/libs/libmythtv/visualisations/videovisualspectrum.cpp
index a9fb9b8337c..efdfbe5f7f6 100644
--- a/mythtv/libs/libmythtv/visualisations/videovisualspectrum.cpp
+++ b/mythtv/libs/libmythtv/visualisations/videovisualspectrum.cpp
@@ -77,6 +77,10 @@ void VideoVisualSpectrum::Draw(const QRect &area, MythPainter *painter,
 
     double magL, magR, tmp;
     double falloff = (((double)SetLastUpdate()) / 40.0) * m_falloff;
+    if (falloff < 0.0)
+        falloff = 0.0;
+    if (falloff > 2048.0)
+        falloff = 2048.0;
     for (int l = 0, r = m_scale.range(); l < m_scale.range(); l++, r++)
     {
         int index = m_scale[l];