diff --git a/factory/variable.h b/factory/variable.h
index 11739d4..bfbb168 100644
--- a/factory/variable.h
+++ b/factory/variable.h
@@ -8,7 +8,7 @@
#ifndef INCL_VARIABLE_H
#define INCL_VARIABLE_H
-// #include "config.h"
+#include "config.h"
#ifndef NOSTREAMIO
# ifdef HAVE_IOSTREAM