diff --git a/net/tipc/core.c b/net/tipc/core.c
index 0539a83..7f3f693 100644
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -90,7 +90,7 @@
 atomic_t tipc_user_count = ATOMIC_INIT(0);
 
 const char tipc_alphabet[] = 
-	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
+	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_.";
 
 /* configurable TIPC parameters */