diff --git a/cdr/cdr_pgsql.c b/cdr/cdr_pgsql.c
index 15a5f0efc155c4b74cf881ea17fad510a7dd89be..ccec5f9e57f06fdab19affb6697a21a999afc255 100755
--- a/cdr/cdr_pgsql.c
+++ b/cdr/cdr_pgsql.c
@@ -142,7 +142,9 @@ char *description(void)
 
 static int my_unload_module(void)
 { 
-	PQfinish(conn);
+	if (conn)
+		PQfinish(conn);
+	conn = NULL;
 	connected = 0;
 	if (pghostname && hostname_alloc) {
 		free(pghostname);