diff --git a/src/eitd/sectionsd.cpp b/src/eitd/sectionsd.cpp
index ab16d27a4..b3a5a64bf 100644
--- a/src/eitd/sectionsd.cpp
+++ b/src/eitd/sectionsd.cpp
@@ -55,6 +55,9 @@
 #include "xmlutil.h"
 #include "debug.h"
 
+// version.h is located in $(top_builddir)
+#include <src/gui/version.h>
+
 #include <compatibility.h>
 #if ! HAVE_CST_HARDWARE
 #include <poll.h>
@@ -1572,8 +1575,8 @@ void CTimeThread::run()
 				if(first_time)
 					sleep_time = 5;
 			}
-			/* in case of wrong TDT date, dont send time is set, 1609455600 - 01.01.2021 00:00:00 */
-			if(time_ntp || (dvb_time > (time_t) 1609455600)) {
+			/* in case of wrong TDT date, dont send time is set */
+			if(time_ntp || (dvb_time > (time_t) BUILT_TIMESTAMP)) {
 				sendTimeEvent(time_ntp, dvb_time);
 				debug(DEBUG_ERROR, "%s: Time set via %s, going to sleep for %d seconds.", name.c_str(),
 						time_ntp ? "NTP" : first_time ? "DVB (TDT)" : "DVB (TOT)", sleep_time);
diff --git a/src/gui/Makefile.am b/src/gui/Makefile.am
index 8803ae864..ed044527a 100644
--- a/src/gui/Makefile.am
+++ b/src/gui/Makefile.am
@@ -3,6 +3,7 @@ BUILT_SOURCES = version.h
 version.h:
 	@rm -f $@; \
 	echo "#define BUILT_DATE \"$$(date)\"" > $@
+	echo "#define BUILT_TIMESTAMP \"$$(date +%s)\"" >> $@
 	@if test -d $(top_srcdir)/.git ; then \
 		pushd $(top_srcdir) ; \
 		GITTAG=$$(git tag -l "NI-*" | tail -n1); \