diff --git a/btio/btio.c b/btio/btio.c
index 44c2f9b..bbf1208 100644
--- a/btio/btio.c
+++ b/btio/btio.c
@@ -21,6 +21,11 @@
  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  *
  */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <stdarg.h>
 #include <stdlib.h>
 #include <unistd.h>