diff --git a/Classes/LinphoneUI/UICallButton.m b/Classes/LinphoneUI/UICallButton.m
index 907c7f600..000e67f00 100644
--- a/Classes/LinphoneUI/UICallButton.m
+++ b/Classes/LinphoneUI/UICallButton.m
@@ -75,8 +75,25 @@
         while( logs ){
             LinphoneCallLog* log = logs->data;
             if( linphone_call_log_get_dir(log) == LinphoneCallOutgoing ){
+                LinphoneProxyConfig* def_proxy = NULL;
                 LinphoneAddress* to = linphone_call_log_get_to(log);
-                char *bis_address = linphone_address_as_string_uri_only(to);
+                const char*  domain = linphone_address_get_domain(to);
+                char*   bis_address = NULL;
+
+                linphone_core_get_default_proxy([LinphoneManager getLc], &def_proxy);
+
+                // if the 'to' address is on the default proxy, only present the username
+                if( def_proxy ){
+                    const char* def_domain = linphone_proxy_config_get_domain(def_proxy);
+                    if( def_domain && domain && !strcmp(domain, def_domain) ){
+                        bis_address = ms_strdup(linphone_address_get_username(to));
+                    }
+                }
+
+                if( bis_address == NULL ) {
+                    bis_address = linphone_address_as_string_uri_only(to);
+                }
+
                 [addressField setText:[NSString stringWithUTF8String:bis_address]];
                 ms_free(bis_address);
                 // return after filling the address, let the user confirm the call by pressing again