diff --git a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
index 93981f4a..99b07562 100644
--- a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
+++ b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
@@ -2410,7 +2410,7 @@ public class XmppConnectionService extends Service {
 		}
 	}
 
-	private String findConferenceServer(final Account account) {
+	public String findConferenceServer(final Account account) {
 		String server;
 		if (account.getXmppConnection() != null) {
 			server = account.getXmppConnection().getMucServer();
@@ -2429,7 +2429,7 @@ public class XmppConnectionService extends Service {
 		return null;
 	}
 
-	public void createAdhocConference(final Account account,
+	public boolean createAdhocConference(final Account account,
 									  final String subject,
 									  final Iterable<Jid> jids,
 									  final UiCallback<Conversation> callback) {
@@ -2441,7 +2441,7 @@ public class XmppConnectionService extends Service {
 					if (callback != null) {
 						callback.error(R.string.no_conference_server_found, null);
 					}
-					return;
+					return false;
 				}
 				final Jid jid = Jid.fromParts(new BigInteger(64, getRNG()).toString(Character.MAX_RADIX), server, null);
 				final Conversation conversation = findOrCreateConversation(account, jid, true);
@@ -2476,15 +2476,18 @@ public class XmppConnectionService extends Service {
 						});
 					}
 				});
+				return true;
 			} catch (InvalidJidException e) {
 				if (callback != null) {
 					callback.error(R.string.conference_creation_failed, null);
 				}
+				return false;
 			}
 		} else {
 			if (callback != null) {
 				callback.error(R.string.not_connected_try_again, null);
 			}
+			return false;
 		}
 	}
 
diff --git a/src/main/java/eu/siacs/conversations/ui/ConversationActivity.java b/src/main/java/eu/siacs/conversations/ui/ConversationActivity.java
index 25cb0d2d..ce8867e8 100644
--- a/src/main/java/eu/siacs/conversations/ui/ConversationActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/ConversationActivity.java
@@ -426,6 +426,7 @@ public class ConversationActivity extends XmppActivity
 					menuContactDetails.setVisible(!this.getSelectedConversation().withSelf());
 					menuMucDetails.setVisible(false);
 					menuSecure.setVisible(Config.multipleEncryptionChoices());
+					menuInviteContact.setVisible(xmppConnectionService != null && xmppConnectionService.findConferenceServer(getSelectedConversation().getAccount()) != null);
 				}
 				if (this.getSelectedConversation().isMuted()) {
 					menuMute.setVisible(false);
diff --git a/src/main/java/eu/siacs/conversations/ui/StartConversationActivity.java b/src/main/java/eu/siacs/conversations/ui/StartConversationActivity.java
index 3585f03a..b81d2d97 100644
--- a/src/main/java/eu/siacs/conversations/ui/StartConversationActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/StartConversationActivity.java
@@ -719,9 +719,10 @@ public class StartConversationActivity extends XmppActivity implements OnRosterU
                         }
                     }
                     if (account != null && jids.size() > 0) {
-                        xmppConnectionService.createAdhocConference(account, subject, jids, mAdhocConferenceCallback);
-                        mToast = Toast.makeText(this, R.string.creating_conference, Toast.LENGTH_LONG);
-                        mToast.show();
+                        if (xmppConnectionService.createAdhocConference(account, subject, jids, mAdhocConferenceCallback)) {
+                            mToast = Toast.makeText(this, R.string.creating_conference, Toast.LENGTH_LONG);
+                            mToast.show();
+                        }
                     }
                 }
             } else {
diff --git a/src/main/java/eu/siacs/conversations/ui/XmppActivity.java b/src/main/java/eu/siacs/conversations/ui/XmppActivity.java
index 583fab78..ac3216e2 100644
--- a/src/main/java/eu/siacs/conversations/ui/XmppActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/XmppActivity.java
@@ -1116,8 +1116,7 @@ public abstract class XmppActivity extends Activity {
 				return false;
 			} else {
 				jids.add(conversation.getJid().toBareJid());
-				service.createAdhocConference(conversation.getAccount(), null, jids, activity.adhocCallback);
-				return true;
+				return service.createAdhocConference(conversation.getAccount(), null, jids, activity.adhocCallback);
 			}
 		}
 	}