diff --git a/libs/sofia-sip/libsofia-sip-ua/tport/tport_tls.c b/libs/sofia-sip/libsofia-sip-ua/tport/tport_tls.c
index 52aa4d803f..2379b48dd6 100644
--- a/libs/sofia-sip/libsofia-sip-ua/tport/tport_tls.c
+++ b/libs/sofia-sip/libsofia-sip-ua/tport/tport_tls.c
@@ -57,6 +57,13 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#if HAVE_FUNC
+#elif HAVE_FUNCTION
+#define __func__ __FUNCTION__
+#else
+static char const __func__[] = "tport_tls";
+#endif
+
 #if HAVE_SIGPIPE
 #include <signal.h>
 #endif
diff --git a/libs/sofia-sip/libsofia-sip-ua/tport/tport_type_tls.c b/libs/sofia-sip/libsofia-sip-ua/tport/tport_type_tls.c
index 247a5f4a9e..7bd96f4081 100644
--- a/libs/sofia-sip/libsofia-sip-ua/tport/tport_type_tls.c
+++ b/libs/sofia-sip/libsofia-sip-ua/tport/tport_type_tls.c
@@ -600,7 +600,7 @@ tport_t *tport_tls_connect(tport_primary_t *pri,
   int err;
   unsigned errlevel = 3;
   char buf[TPORT_HOSTPORTSIZE];
-  char const *what;
+  char const *what="";
 
   s = su_socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
   if (s == INVALID_SOCKET)