diff --git a/Common/DtaOptions.h b/Common/DtaOptions.h
index 9eec24a..ef72f9b 100644
--- a/Common/DtaOptions.h
+++ b/Common/DtaOptions.h
@@ -21,6 +21,8 @@ along with sedutil. If not, see .
#ifndef _DTAOPTIONS_H
#define _DTAOPTIONS_H
+#include
+
/** Output modes */
typedef enum _sedutiloutput {
sedutilNormal,