diff --git a/res/xml/preferences.xml b/res/xml/preferences.xml
index 7a61b81f..e4a527f6 100644
--- a/res/xml/preferences.xml
+++ b/res/xml/preferences.xml
@@ -89,7 +89,7 @@
                     android:summary="@string/pref_dont_save_encrypted_summary"
                     android:title="@string/pref_dont_save_encrypted" />
                 <CheckBoxPreference
-                    android:defaultValue="true"
+                    android:defaultValue="false"
                     android:key="enable_legacy_ssl"
                     android:summary="@string/pref_enable_legacy_ssl_summary"
                     android:title="@string/pref_enable_legacy_ssl" />
diff --git a/src/eu/siacs/conversations/xmpp/XmppConnection.java b/src/eu/siacs/conversations/xmpp/XmppConnection.java
index 43469f08..0ae51fb5 100644
--- a/src/eu/siacs/conversations/xmpp/XmppConnection.java
+++ b/src/eu/siacs/conversations/xmpp/XmppConnection.java
@@ -517,7 +517,7 @@ public class XmppConnection implements Runnable {
 	}
 
 	private boolean enableLegacySSL() {
-		return getPreferences().getBoolean("enable_legacy_ssl", true);
+		return getPreferences().getBoolean("enable_legacy_ssl", false);
 	}
 
 	private void switchOverToTls(Tag currentTag) throws XmlPullParserException,