Index: src/jrd/scl.epp
===================================================================
--- src/jrd/scl.epp	(revision 52541)
+++ src/jrd/scl.epp	(working copy)
@@ -141,7 +141,7 @@
 	{
 		ERR_post(isc_no_priv, isc_arg_string, "(ACL unrecognized)",
 				 isc_arg_string, "security_class",
-				 isc_arg_string, s_class->scl_name,
+				 isc_arg_string, s_class->scl_name.c_str(),
 				 isc_arg_end);
 	}