diff --git a/src/alloc.h b/src/alloc.h
index afded9b1..855e4a8f 100644
--- a/src/alloc.h
+++ b/src/alloc.h
@@ -19,6 +19,8 @@ the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.  */
 
 
+#include "config.h"
+
 #define	NEW(t)		((t *) xmalloc((unsigned) sizeof(t)))
 #define	NEW2(n, t)	((t *) xmalloc((unsigned) ((n) * sizeof(t))))
 
diff --git a/src/symtab.h b/src/symtab.h
index d831ccbb..71b96b27 100644
--- a/src/symtab.h
+++ b/src/symtab.h
@@ -18,6 +18,7 @@ along with Bison; see the file COPYING.  If not, write to
 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.  */
 
+#include "config.h"
 
 #define	TABSIZE	1009