diff --git a/MIGRATION.md b/MIGRATION.md
index 8375746b6..15acce521 100644
--- a/MIGRATION.md
+++ b/MIGRATION.md
@@ -1,5 +1,8 @@
 ###Upgrade Notes
 
+#### v5.2.0 -> v5.2.1
+* the `SecondaryDrawerItem` is now a subclass of the `PrimaryDrawerItem` (extends `PrimaryDrawerItem`). If you have an `if` which checks for the type with `instanceOf` make sure you check for the `SecondaryDrawerItem` first. (`secondaryDrawerItem instanceOf PrimaryDrawerItem == true`)
+
 #### v5.1.6 -> 5.1.8
 * if you use the `FastAdapter` please check out the release notes of v1.4.0 (https://github.com/mikepenz/FastAdapter/releases/tag/v1.4.0)
 
diff --git a/library/src/main/java/com/mikepenz/materialdrawer/MiniDrawer.java b/library/src/main/java/com/mikepenz/materialdrawer/MiniDrawer.java
index 534d25664..0606ea0e9 100644
--- a/library/src/main/java/com/mikepenz/materialdrawer/MiniDrawer.java
+++ b/library/src/main/java/com/mikepenz/materialdrawer/MiniDrawer.java
@@ -238,10 +238,10 @@ public FastAdapter.OnLongClickListener getOnMiniDrawerItemLongClickListener() {
      * @return
      */
     public IDrawerItem generateMiniDrawerItem(IDrawerItem drawerItem) {
-        if (drawerItem instanceof PrimaryDrawerItem) {
+        if (drawerItem instanceof SecondaryDrawerItem) {
+            return mIncludeSecondaryDrawerItems ? new MiniDrawerItem((SecondaryDrawerItem) drawerItem).withEnableSelectedBackground(mEnableSelectedMiniDrawerItemBackground) : null;
+        } else if (drawerItem instanceof PrimaryDrawerItem) {
             return new MiniDrawerItem((PrimaryDrawerItem) drawerItem).withEnableSelectedBackground(mEnableSelectedMiniDrawerItemBackground);
-        } else if (drawerItem instanceof SecondaryDrawerItem && mIncludeSecondaryDrawerItems) {
-            return new MiniDrawerItem((SecondaryDrawerItem) drawerItem).withEnableSelectedBackground(mEnableSelectedMiniDrawerItemBackground);
         } else if (drawerItem instanceof ProfileDrawerItem) {
             MiniProfileDrawerItem mpdi = new MiniProfileDrawerItem((ProfileDrawerItem) drawerItem);
             mpdi.withEnabled(mEnableProfileClick);