diff --git a/src/include/compoundfilereader.h b/src/include/compoundfilereader.h
index b647a1f..49887ec 100644
--- a/src/include/compoundfilereader.h
+++ b/src/include/compoundfilereader.h
@@ -28,6 +28,8 @@
     \endcode
 */
 
+#pragma once
+
 #include <algorithm>
 #include <stdint.h>
 #include <string.h>