Index: res/res_musiconhold.c
===================================================================
--- res/res_musiconhold.c	(revision 251399)
+++ res/res_musiconhold.c	(working copy)
@@ -1433,6 +1433,10 @@
 		}
 	}
 
+	if (ast_test_flag(global_flags, MOH_CACHERTCLASSES)) {
+		mohclass = get_mohbyname(mohclass->name, 0);
+	}
+
 	if (!mohclass) {
 		return -1;
 	}