diff --git a/schemas/gschemas.compiled b/schemas/gschemas.compiled
index bdd63d2..a24c7b5 100644
Binary files a/schemas/gschemas.compiled and b/schemas/gschemas.compiled differ
diff --git a/schemas/org.gnome.shell.extensions.bingwallpaper.gschema.xml b/schemas/org.gnome.shell.extensions.bingwallpaper.gschema.xml
index b01c105..63b3a25 100644
--- a/schemas/org.gnome.shell.extensions.bingwallpaper.gschema.xml
+++ b/schemas/org.gnome.shell.extensions.bingwallpaper.gschema.xml
@@ -69,6 +69,12 @@
         <description>Save disk space</description>
     </key>
 
+    <key name="keep-favourites" type="b">
+      <default>True</default>
+        <summary>Keep previous wallpapers if they are favourites</summary>
+        <description>Sensible default behaivour</description>
+    </key>
+
     <key name="previous-days" type="i">
       <default>8</default>
       <summary>Number of days to keep wallpapers</summary>
diff --git a/utils.js b/utils.js
index 1ebe159..6f1c43a 100644
--- a/utils.js
+++ b/utils.js
@@ -550,6 +550,7 @@ export function deleteImage(to_delete) {
 // add image to persistant list so we can delete it later (in chronological order), delete the oldest image (if user wants this)
 export function purgeImages(settings) {
     let deletepictures = settings.get_boolean('delete-previous');
+    let keepfavorites = settings.get_boolean('keep-favourites');
     if (deletepictures === false)
         return;
     let imagelist = imageListSortByDate(getImageList(settings));
@@ -557,7 +558,8 @@ export function purgeImages(settings) {
     let origlength = imagelist.length;
     while (imagelist.length > maxpictures) {
         var to_delete = imagelist.shift(); // get the first (oldest item from the list)
-        if (deletepictures && to_delete != '') {
+        var ok_to_delete = keepfavorites && (to_delete.favourite && to_delete.favourite === true);
+        if (deletepictures && to_delete != '' && ok_to_delete) {
             let imageFilename = imageToFilename(settings, to_delete);
             BingLog('deleting '+imageFilename);
             deleteImage(imageFilename);