diff --git a/library/include/mobilisis/duration.h b/library/include/mobilisis/duration.h
index 9c6ca65..e903843 100644
--- a/library/include/mobilisis/duration.h
+++ b/library/include/mobilisis/duration.h
@@ -1,4 +1,3 @@
-#pragma once
 #include <string>
 
 class ATBDuration
@@ -7,4 +6,6 @@ public:
 	int pun_id;
 	std::string pun_label;
 	int pun_duration;
-};
\ No newline at end of file
+    int pun_duration_min;
+    int pun_duration_max;
+};