diff --git a/src/timedata.h b/src/timedata.h
index 9f2499c85..2c0b036e2 100644
--- a/src/timedata.h
+++ b/src/timedata.h
@@ -10,7 +10,7 @@
 #include <stdint.h>
 #include <vector>
 
-static const int64_t DEFAULT_MAX_TIME_ADJUSTMENT = 70 * 60;
+static const int64_t DEFAULT_MAX_TIME_ADJUSTMENT = 35 * 60;
 
 class CNetAddr;