diff --git a/layouts/layoutanimator.cpp b/layouts/layoutanimator.cpp
index 5d6942831..573cf3989 100644
--- a/layouts/layoutanimator.cpp
+++ b/layouts/layoutanimator.cpp
@@ -220,9 +220,9 @@ void LayoutAnimator::moveEffectUpdateItem( qreal value , LayoutItem* item , Effe
     Widget* widget = dynamic_cast<Widget*>(item->graphicsItem());
 
     if ( widget && effect == FadeInMoveEffect )
-        widget->setOpacity( qMin(1.0,widget->opacity()+d->delta(value)) );
+        widget->setOpacity( qMin(qreal(1.0),widget->opacity()+d->delta(value)) );
     else if ( widget && effect == FadeOutMoveEffect )
-        widget->setOpacity( qMax(0.0,widget->opacity()-d->delta(value)) );
+        widget->setOpacity( qMax(qreal(0.0),widget->opacity()-d->delta(value)) );
 
     
     if ( effect == FadeInMoveEffect ) {
diff --git a/layouts/nodelayout.cpp b/layouts/nodelayout.cpp
index 64ca9dd56..2eace2766 100644
--- a/layouts/nodelayout.cpp
+++ b/layouts/nodelayout.cpp
@@ -141,8 +141,8 @@ public:
             // not do anything smarter concerning the sizeHint when there are
             // autosized elements.
 
-            qreal width  = item->sizeHint().width()  / qMin(scaled.width(), 1.0);
-            qreal height = item->sizeHint().height() / qMin(scaled.height(), 1.0);
+            qreal width  = item->sizeHint().width()  / qMin(scaled.width(), qreal(1.0));
+            qreal height = item->sizeHint().height() / qMin(scaled.height(), qreal(1.0));
 
             if (width > sizeHint.width())   sizeHint.setWidth(width);
             if (height > sizeHint.height()) sizeHint.setHeight(height);
diff --git a/phase.cpp b/phase.cpp
index fba273867..bd8c35486 100644
--- a/phase.cpp
+++ b/phase.cpp
@@ -115,7 +115,7 @@ class Phase::Private
         {
             qreal progress = frames;
             progress = currentFrame / progress;
-            progress = qMin(1.0, qMax(0.0, progress));
+            progress = qMin(qreal(1.0), qMax(qreal(0.0), progress));
             return progress;
         }
 
@@ -420,7 +420,7 @@ QPixmap Phase::animationResult(AnimId id)
     qreal progress = state->frames;
     //kDebug() << "Phase::animationResult(" << id <<   " at " << progress;
     progress = state->currentFrame / progress;
-    progress = qMin(1.0, qMax(0.0, progress));
+    progress = qMin(qreal(1.0), qMax(qreal(0.0), progress));
     //kDebug() << "Phase::animationResult(" << id <<   " at " << progress;
 
     switch (state->animation) {
diff --git a/searchmatch.cpp b/searchmatch.cpp
index 03b13ed85..bb1e2399a 100644
--- a/searchmatch.cpp
+++ b/searchmatch.cpp
@@ -92,7 +92,7 @@ QString SearchMatch::searchTerm() const
 
 void SearchMatch::setRelevance(qreal relevance)
 {
-    d->relevance = qMax(0.0, qMin(1.0, relevance));
+    d->relevance = qMax(qreal(0.0), qMin(qreal(1.0), relevance));
 }
 
 qreal SearchMatch::relevance() const
diff --git a/widgets/signalplotter.cpp b/widgets/signalplotter.cpp
index 842c87fac..546824a08 100644
--- a/widgets/signalplotter.cpp
+++ b/widgets/signalplotter.cpp
@@ -255,7 +255,7 @@ void SignalPlotter::scale(qreal delta)
     calculateNiceRange();
 }
 
-double SignalPlotter::scaledBy() const
+qreal SignalPlotter::scaledBy() const
 {
     return d->scaledBy;
 }