diff --git a/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java b/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
index 4db06b96a..8bcbe998b 100644
--- a/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
@@ -2,10 +2,8 @@ package eu.siacs.conversations.ui;
 
 import android.app.AlertDialog;
 import android.app.PendingIntent;
-import android.content.ActivityNotFoundException;
 import android.content.Context;
 import android.content.DialogInterface;
-import android.content.Intent;
 import android.content.IntentSender.SendIntentException;
 import android.os.Bundle;
 import android.view.ContextMenu;
@@ -44,6 +42,9 @@ import eu.siacs.conversations.xmpp.jid.Jid;
 
 public class ConferenceDetailsActivity extends XmppActivity implements OnConversationUpdate, OnMucRosterUpdate, XmppConnectionService.OnAffiliationChanged, XmppConnectionService.OnRoleChanged, XmppConnectionService.OnConferenceOptionsPushed {
 	public static final String ACTION_VIEW_MUC = "view_muc";
+
+	private static final float INACTIVE_ALPHA = 0.4684f; //compromise between dark and light theme
+
 	private Conversation mConversation;
 	private OnClickListener inviteListener = new OnClickListener() {
 
@@ -621,6 +622,12 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
 			}
 			ImageView iv = (ImageView) view.findViewById(R.id.contact_photo);
 			iv.setImageBitmap(avatarService().get(user, getPixel(48), false));
+			if (user.getRole() == MucOptions.Role.NONE) {
+				tvDisplayName.setAlpha(INACTIVE_ALPHA);
+				tvKey.setAlpha(INACTIVE_ALPHA);
+				tvStatus.setAlpha(INACTIVE_ALPHA);
+				iv.setAlpha(INACTIVE_ALPHA);
+			}
 			membersView.addView(view);
 			if (mConversation.getMucOptions().canInvite()) {
 				mInviteButton.setVisibility(View.VISIBLE);