diff --git a/libs/sofia-sip/libsofia-sip-ua/su/su_addrinfo.c b/libs/sofia-sip/libsofia-sip-ua/su/su_addrinfo.c
index f24e4f7dbb..7b78af6e23 100644
--- a/libs/sofia-sip/libsofia-sip-ua/su/su_addrinfo.c
+++ b/libs/sofia-sip/libsofia-sip-ua/su/su_addrinfo.c
@@ -805,6 +805,9 @@ freeaddrinfo(ai)
 {
 	struct addrinfo *next;
 
+	if (ai == NULL)
+		return;
+
 	do {
 		next = ai->ai_next;
 		if (ai->ai_canonname)