diff --git a/applet.cpp b/applet.cpp
index e4bbef8d4..6c652c897 100644
--- a/applet.cpp
+++ b/applet.cpp
@@ -1036,7 +1036,7 @@ QStringList Applet::knownCategories(const QString &parentApp, bool visibleOnly)
     QStringList categories;
     foreach (const KService::Ptr applet, offers) {
         QString appletCategory = applet->property("X-KDE-PluginInfo-Category").toString();
-        if (visibleOnly && applet->property("NoDisplay").toBool()) {
+        if (visibleOnly && applet->noDisplay()) {
             // we don't want to show the hidden category
             continue;
         }
diff --git a/dataengine.cpp b/dataengine.cpp
index 0232736ff..b68c44eaf 100644
--- a/dataengine.cpp
+++ b/dataengine.cpp
@@ -427,7 +427,7 @@ bool DataEngine::isValid() const
 
 bool DataEngine::isEmpty() const
 {
-    return d->sources.count() < 1;
+    return d->sources.isEmpty();
 }
 
 void DataEngine::setValid(bool valid)
diff --git a/widgets/layoutanimator.cpp b/widgets/layoutanimator.cpp
index b47f77295..ef0a60eef 100644
--- a/widgets/layoutanimator.cpp
+++ b/widgets/layoutanimator.cpp
@@ -119,14 +119,15 @@ void LayoutAnimator::setAutoDeleteOnRemoval(bool autoDelete)
                 SLOT(itemAutoDeleter(LayoutItem*,State,State)) );
     } 
 }
+
 bool LayoutAnimator::autoDeleteOnRemoval() const
 {
     return d->autoDeleteOnRemoval;
 }
+
 void LayoutAnimator::itemAutoDeleter(LayoutItem *item , State oldState , State newState)
 {
     if ( oldState == RemovedState && newState == DeadState ) {
-        
         if ( item->graphicsItem() ) {
             item->graphicsItem()->scene()->removeItem( item->graphicsItem() );
 
@@ -137,6 +138,7 @@ void LayoutAnimator::itemAutoDeleter(LayoutItem *item , State oldState , State n
         delete item;
     }
 }
+
 void LayoutAnimator::setEffect( State action , int effect )
 {
     d->effects[action] = effect;