diff --git a/preprocessor/ParsingDriver.cc b/preprocessor/ParsingDriver.cc
index 42ac5cdf20f60975bc009fdb62273e359b30c392..ec6bf118179c0a96c3705425ddd09ddde34c228b 100644
--- a/preprocessor/ParsingDriver.cc
+++ b/preprocessor/ParsingDriver.cc
@@ -473,8 +473,7 @@ ParsingDriver::init_val(string *name, expr_t rhs)
   if (nostrict)
     if (!mod_file->symbol_table.exists(*name))
       {
-        warnings << "WARNING: discarding '" << *name
-                 << "' not recognized in initval or endval statement" << endl;
+        warning("discarding '" + *name + "' as it was not recognized in the initval or endval statement");
         delete name;
         return;
       }