diff --git a/src/filewidgets/kdiroperator.cpp b/src/filewidgets/kdiroperator.cpp
--- a/src/filewidgets/kdiroperator.cpp
+++ b/src/filewidgets/kdiroperator.cpp
@@ -147,6 +147,7 @@
     void _k_slotDirectoryCreated(const QUrl &);
 
     int iconSizeForViewType(QAbstractItemView *itemView) const;
+    void writeIconZoomSettings(KConfigGroup &configGroup);
 
     // private members
     KDirOperator * const parent;
@@ -510,24 +511,44 @@
 
 void KDirOperator::Private::_k_slotDetailedView()
 {
+    if (configGroup && itemView) {
+        // save old zoom settings
+        writeIconZoomSettings(*configGroup);
+    }
+
     KFile::FileView view = static_cast<KFile::FileView>((viewKind & ~allViews()) | KFile::Detail);
     parent->setView(view);
 }
 
 void KDirOperator::Private::_k_slotSimpleView()
 {
+    if (configGroup && itemView) {
+        // save old zoom settings
+        writeIconZoomSettings(*configGroup);
+    }
+
     KFile::FileView view = static_cast<KFile::FileView>((viewKind & ~allViews()) | KFile::Simple);
     parent->setView(view);
 }
 
 void KDirOperator::Private::_k_slotTreeView()
 {
+    if (configGroup && itemView) {
+        // save old zoom settings
+        writeIconZoomSettings(*configGroup);
+    }
+
     KFile::FileView view = static_cast<KFile::FileView>((viewKind & ~allViews()) | KFile::Tree);
     parent->setView(view);
 }
 
 void KDirOperator::Private::_k_slotDetailedTreeView()
 {
+    if (configGroup && itemView) {
+        // save old zoom settings
+        writeIconZoomSettings(*configGroup);
+    }
+
     KFile::FileView view = static_cast<KFile::FileView>((viewKind & ~allViews()) | KFile::DetailTree);
     parent->setView(view);
 }
@@ -634,6 +655,11 @@
 
 void KDirOperator::Private::_k_slotToggleIconsView()
 {
+    if (configGroup && itemView) {
+        // save old zoom settings
+        writeIconZoomSettings(*configGroup);
+    }
+
     // Put the icons on top
     actionCollection->action(QStringLiteral("decorationAtTop"))->setChecked(true);
     decorationPosition = QStyleOptionViewItem::Top;
@@ -645,6 +671,11 @@
 
 void KDirOperator::Private::_k_slotToggleCompactView()
 {
+    if (configGroup && itemView) {
+        // save old zoom settings
+        writeIconZoomSettings(*configGroup);
+    }
+
     // Put the icons on the side
     actionCollection->action(QStringLiteral("decorationAtLeft"))->setChecked(true);
     decorationPosition = QStyleOptionViewItem::Left;
@@ -656,6 +687,11 @@
 
 void KDirOperator::Private::_k_slotToggleDetailsView()
 {
+    if (configGroup && itemView) {
+        // save old zoom settings
+        writeIconZoomSettings(*configGroup);
+    }
+
     KFile::FileView view;
     if (actionCollection->action(QStringLiteral("allow expansion"))->isChecked()) {
         view = static_cast<KFile::FileView>((viewKind & ~allViews()) | KFile::DetailTree);
@@ -2291,16 +2327,34 @@
 
     if (d->inlinePreviewState == Private::NotForced) {
         configGroup.writeEntry(QStringLiteral("Show Inline Previews"), d->showPreviews);
-        if (qobject_cast<QListView *>(d->itemView)) {
-             configGroup.writeEntry(QStringLiteral("listViewIconSize"), d->iconsZoom);
-        } else {
-             configGroup.writeEntry(QStringLiteral("detailedViewIconSize"), d->iconsZoom);
-        }
+        d->writeIconZoomSettings(configGroup);
     }
 
     configGroup.writeEntry(QStringLiteral("Decoration position"), (int) d->decorationPosition);
 }
 
+void KDirOperator::Private::writeIconZoomSettings(KConfigGroup &configGroup) {
+    // must match behavior of iconSizeForViewType
+    KFile::FileView fv = static_cast<KFile::FileView>(viewKind);
+
+    if (KFile::isSimpleView(fv)) {
+        if (decorationPosition == QStyleOptionViewItem::Top){
+            // Simple view decoration above, aka Icons View
+            configGroup.writeEntry("iconViewIconSize", iconsZoom);
+        } else {
+            // Simple view decoration left, aka compact view
+            configGroup.writeEntry("listViewIconSize", iconsZoom);
+        }
+    } else {
+        if (KFile::isTreeView(fv)) {
+            configGroup.writeEntry(QStringLiteral("treeViewIconSize"), iconsZoom);
+        } else if (KFile::isDetailView(fv)) {
+            configGroup.writeEntry(QStringLiteral("detailViewIconSize"), iconsZoom);
+        } else if (KFile::isDetailTreeView(fv)) {
+            configGroup.writeEntry(QStringLiteral("detailTreeViewIconSize"), iconsZoom);
+        }
+    }
+}
 
 void KDirOperator::resizeEvent(QResizeEvent *)
 {
@@ -2637,15 +2691,33 @@
 
 int KDirOperator::Private::iconSizeForViewType(QAbstractItemView *itemView) const
 {
+    // must match behavior of writeIconZoomSettings
     if (!itemView || !configGroup) {
         return 0;
     }
 
-    if (qobject_cast<QListView *>(itemView)) {
-         return configGroup->readEntry("listViewIconSize", 0);
+    KFile::FileView fv = static_cast<KFile::FileView>(viewKind);
+
+    if (KFile::isSimpleView(fv)) {
+        if (decorationPosition == QStyleOptionViewItem::Top){
+            // Simple view decoration above, aka Icons View
+            // default to 43% aka 64px
+            return configGroup->readEntry("iconViewIconSize", 43);
+        } else {
+            // Simple view decoration left, aka compact view
+            return configGroup->readEntry("listViewIconSize", 0);
+        }
     } else {
-         return configGroup->readEntry("detailedViewIconSize", 0);
+        if (KFile::isTreeView(fv)) {
+            return configGroup->readEntry(QStringLiteral("treeViewIconSize"), 0);
+        } else if (KFile::isDetailView(fv)) {
+            return configGroup->readEntry(QStringLiteral("detailViewIconSize"), 0);
+        } else if (KFile::isDetailTreeView(fv)) {
+            return configGroup->readEntry(QStringLiteral("detailTreeViewIconSize"), 0);
+        }
     }
+
+    return 0;
 }
 
 void KDirOperator::setViewConfig(KConfigGroup &configGroup)