diff --git a/tmv.h b/tmv.h
index f4a1a22..9039534 100644
--- a/tmv.h
+++ b/tmv.h
@@ -20,6 +20,7 @@
 #ifndef HAVE_TMV_H
 #define HAVE_TMV_H
 
+#include <linux/ptp_clock.h>
 #include <time.h>
 
 #include "ddt.h"
@@ -160,4 +161,11 @@ static inline tmv_t timestamp_to_tmv(struct timestamp ts)
 	return t;
 }
 
+static inline tmv_t pct_to_tmv(struct ptp_clock_time pct)
+{
+	tmv_t t;
+	t.ns = pct.sec * NS_PER_SEC + pct.nsec;
+	return t;
+}
+
 #endif