diff --git a/world/net/library.i b/world/net/library.i
index 328135d..a02ebf2 100644
--- a/world/net/library.i
+++ b/world/net/library.i
@@ -196,7 +196,7 @@ static void create() {
 #ifdef VOLATILE
 	D("VOLATILE flag set: Server will not save any data.\n");
 #endif
-	myLowerCaseHost = lower_case(SERVER_HOST);
+	myLowerCaseHost = NAMEPREP(SERVER_HOST);
 	register_localhost(myLowerCaseHost);
 #ifdef __PIKE__
         //debug_write("Creating psyced library in Pike.\n");