diff --git a/app/src/main/java/com/nextcloud/talk/adapters/items/ConversationItem.java b/app/src/main/java/com/nextcloud/talk/adapters/items/ConversationItem.java
index 91b2d0fcd..30fbe3d2d 100644
--- a/app/src/main/java/com/nextcloud/talk/adapters/items/ConversationItem.java
+++ b/app/src/main/java/com/nextcloud/talk/adapters/items/ConversationItem.java
@@ -27,9 +27,9 @@ import android.content.Context;
 import android.content.res.ColorStateList;
 import android.graphics.Color;
 import android.graphics.Typeface;
-import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.LayerDrawable;
+import android.os.Build;
 import android.text.TextUtils;
 import android.text.format.DateUtils;
 import android.view.View;
@@ -215,13 +215,16 @@ public class ConversationItem extends AbstractFlexibleItem<ConversationItem.Conv
         }
 
         if (Conversation.ConversationType.ROOM_SYSTEM.equals(conversation.getType())) {
-            Drawable[] layers = new Drawable[2];
-            layers[0] = context.getDrawable(R.drawable.ic_launcher_background);
-            layers[1] = context.getDrawable(R.drawable.ic_launcher_foreground);
-            LayerDrawable layerDrawable = new LayerDrawable(layers);
-
-            holder.dialogAvatar.getHierarchy().setPlaceholderImage(DisplayUtils.getRoundedDrawable(layerDrawable));
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                Drawable[] layers = new Drawable[2];
+                layers[0] = ContextCompat.getDrawable(context, R.drawable.ic_launcher_background);
+                layers[1] = ContextCompat.getDrawable(context, R.drawable.ic_launcher_foreground);
+                LayerDrawable layerDrawable = new LayerDrawable(layers);
 
+                holder.dialogAvatar.getHierarchy().setPlaceholderImage(DisplayUtils.getRoundedDrawable(layerDrawable));
+            } else {
+                holder.dialogAvatar.getHierarchy().setPlaceholderImage(R.mipmap.ic_launcher);
+            }
             shouldLoadAvatar = false;
         }
 
diff --git a/app/src/main/java/com/nextcloud/talk/adapters/messages/IncomingVoiceMessageViewHolder.kt b/app/src/main/java/com/nextcloud/talk/adapters/messages/IncomingVoiceMessageViewHolder.kt
index 40d06ef08..870a0951f 100644
--- a/app/src/main/java/com/nextcloud/talk/adapters/messages/IncomingVoiceMessageViewHolder.kt
+++ b/app/src/main/java/com/nextcloud/talk/adapters/messages/IncomingVoiceMessageViewHolder.kt
@@ -28,11 +28,11 @@ import android.annotation.SuppressLint
 import android.content.Context
 import android.graphics.drawable.Drawable
 import android.graphics.drawable.LayerDrawable
+import android.os.Build
 import android.text.TextUtils
 import android.util.Log
 import android.view.View
 import android.widget.SeekBar
-import androidx.appcompat.content.res.AppCompatResources
 import androidx.core.content.ContextCompat
 import androidx.core.content.res.ResourcesCompat
 import androidx.core.view.ViewCompat
@@ -201,11 +201,15 @@ class IncomingVoiceMessageViewHolder(incomingView: View) : MessageHolders
             if (message.actorType == "guests") {
                 // do nothing, avatar is set
             } else if (message.actorType == "bots" && message.actorId == "changelog") {
-                val layers = arrayOfNulls<Drawable>(2)
-                layers[0] = AppCompatResources.getDrawable(context!!, R.drawable.ic_launcher_background)
-                layers[1] = AppCompatResources.getDrawable(context!!, R.drawable.ic_launcher_foreground)
-                val layerDrawable = LayerDrawable(layers)
-                binding.messageUserAvatar.setImageDrawable(DisplayUtils.getRoundedDrawable(layerDrawable))
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                    val layers = arrayOfNulls<Drawable>(2)
+                    layers[0] = ContextCompat.getDrawable(context!!, R.drawable.ic_launcher_background)
+                    layers[1] = ContextCompat.getDrawable(context!!, R.drawable.ic_launcher_foreground)
+                    val layerDrawable = LayerDrawable(layers)
+                    binding.messageUserAvatar.setImageDrawable(DisplayUtils.getRoundedDrawable(layerDrawable))
+                } else {
+                    binding.messageUserAvatar.setImageResource(R.mipmap.ic_launcher)
+                }
             } else if (message.actorType == "bots") {
                 val drawable = TextDrawable.builder()
                     .beginConfig()
diff --git a/app/src/main/java/com/nextcloud/talk/adapters/messages/MagicIncomingTextMessageViewHolder.kt b/app/src/main/java/com/nextcloud/talk/adapters/messages/MagicIncomingTextMessageViewHolder.kt
index 21e9b6d49..80023f38c 100644
--- a/app/src/main/java/com/nextcloud/talk/adapters/messages/MagicIncomingTextMessageViewHolder.kt
+++ b/app/src/main/java/com/nextcloud/talk/adapters/messages/MagicIncomingTextMessageViewHolder.kt
@@ -27,6 +27,7 @@ import android.content.Intent
 import android.graphics.drawable.Drawable
 import android.graphics.drawable.LayerDrawable
 import android.net.Uri
+import android.os.Build
 import android.text.Spannable
 import android.text.SpannableString
 import android.text.TextUtils
@@ -81,11 +82,15 @@ class MagicIncomingTextMessageViewHolder(itemView: View) : MessageHolders
                 // do nothing, avatar is set
             } else if (message.actorType == "bots" && message.actorId == "changelog") {
                 if (context != null) {
-                    val layers = arrayOfNulls<Drawable>(2)
-                    layers[0] = ContextCompat.getDrawable(context!!, R.drawable.ic_launcher_background)
-                    layers[1] = ContextCompat.getDrawable(context!!, R.drawable.ic_launcher_foreground)
-                    val layerDrawable = LayerDrawable(layers)
-                    binding.messageUserAvatar.setImageDrawable(DisplayUtils.getRoundedDrawable(layerDrawable))
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                        val layers = arrayOfNulls<Drawable>(2)
+                        layers[0] = ContextCompat.getDrawable(context!!, R.drawable.ic_launcher_background)
+                        layers[1] = ContextCompat.getDrawable(context!!, R.drawable.ic_launcher_foreground)
+                        val layerDrawable = LayerDrawable(layers)
+                        binding.messageUserAvatar.setImageDrawable(DisplayUtils.getRoundedDrawable(layerDrawable))
+                    } else {
+                        binding.messageUserAvatar.setImageResource(R.mipmap.ic_launcher)
+                    }
                 }
             } else if (message.actorType == "bots") {
                 val drawable = TextDrawable.builder()
diff --git a/app/src/main/java/com/nextcloud/talk/utils/database/user/UserUtils.java b/app/src/main/java/com/nextcloud/talk/utils/database/user/UserUtils.java
index cf3458353..ef8fc2a14 100644
--- a/app/src/main/java/com/nextcloud/talk/utils/database/user/UserUtils.java
+++ b/app/src/main/java/com/nextcloud/talk/utils/database/user/UserUtils.java
@@ -55,7 +55,7 @@ public class UserUtils {
 
     public List getUsers() {
         Result findUsersQueryResult = dataStore.select(User.class).where
-                (UserEntity.SCHEDULED_FOR_DELETION.notEqual(true)).get();
+                (UserEntity.SCHEDULED_FOR_DELETION.notEqual(Boolean.TRUE)).get();
 
         return findUsersQueryResult.toList();
     }
diff --git a/scripts/analysis/lint-results.txt b/scripts/analysis/lint-results.txt
index 210a55682..8e9192559 100644
--- a/scripts/analysis/lint-results.txt
+++ b/scripts/analysis/lint-results.txt
@@ -1,2 +1,2 @@
 DO NOT TOUCH; GENERATED BY DRONE
-      <span class="mdl-layout-title">Lint Report: 3 errors and 274 warnings</span>
+      <span class="mdl-layout-title">Lint Report: 3 errors and 272 warnings</span>