diff --git a/src/jrd/scl.epp b/src/jrd/scl.epp
index 3f1be3145b..27c529cf54 100644
--- a/src/jrd/scl.epp
+++ b/src/jrd/scl.epp
@@ -140,7 +140,7 @@ void SCL_check_access(const SecurityClass* s_class,
 	{
 		ERR_post(isc_no_priv, isc_arg_string, "(ACL unrecognized)",
 				 isc_arg_string, "security_class",
-				 isc_arg_string, s_class->scl_name.c_str(),
+				 isc_arg_string, ERR_cstring(s_class->scl_name),
 				 0);
 	}