diff --git a/core/net/mac/tsch/tsch-conf.h b/core/net/mac/tsch/tsch-conf.h
index d8d58f0ff..184ffab16 100644
--- a/core/net/mac/tsch/tsch-conf.h
+++ b/core/net/mac/tsch/tsch-conf.h
@@ -174,7 +174,7 @@
 #ifdef TSCH_CONF_ADAPTIVE_TIMESYNC
 #define TSCH_ADAPTIVE_TIMESYNC TSCH_CONF_ADAPTIVE_TIMESYNC
 #else
-#define TSCH_ADAPTIVE_TIMESYNC 0
+#define TSCH_ADAPTIVE_TIMESYNC 1
 #endif
 
 /* HW frame filtering enabled */