diff --git a/Resources/linphonerc b/Resources/linphonerc
index 4da97f006..314bb41c4 100644
--- a/Resources/linphonerc
+++ b/Resources/linphonerc
@@ -2,6 +2,8 @@
 contact="Linphone iPhone" <sip:linphone.iphone@unknown-host>
 keepalive_period=30000
 default_proxy=0
+sip_port=-1
+sip_tcp_port=-1
 
 [rtp]
 audio_rtp_port=7076
diff --git a/Resources/linphonerc~ipad b/Resources/linphonerc~ipad
index 008d4a702..89537baaa 100644
--- a/Resources/linphonerc~ipad
+++ b/Resources/linphonerc~ipad
@@ -2,6 +2,8 @@
 contact="Linphone iPhone" <sip:linphone.iphone@unknown-host>
 keepalive_period=30000
 default_proxy=0
+sip_port=-1
+sip_tcp_port=-1
 
 [rtp]
 audio_rtp_port=7076