Index: src/XMPPConnection.m
==================================================================
--- src/XMPPConnection.m
+++ src/XMPPConnection.m
@@ -1013,11 +1013,11 @@
 					      namespace: XMPP_NS_SESSION];
 	OFXMLElement *mechs = [element elementForName: @"mechanisms"
 					    namespace: XMPP_NS_SASL];
 	OFMutableSet *mechanisms = [OFMutableSet set];
 
-	if (starttls != nil) {
+	if (!encrypted && starttls != nil) {
 		[self sendStanza:
 		    [OFXMLElement elementWithName: @"starttls"
 					namespace: XMPP_NS_STARTTLS]];
 		return;
 	}