diff --git a/src/bin/pg_waldump/compat.c b/src/bin/pg_waldump/compat.c
index 1541eac611..9e1a45af81 100644
--- a/src/bin/pg_waldump/compat.c
+++ b/src/bin/pg_waldump/compat.c
@@ -54,6 +54,12 @@ timestamptz_to_str(TimestampTz t)
        time_t          result = (time_t) timestamptz_to_time_t(t);
        struct tm  *ltime = localtime(&result);

+       if (!ltime)
+       {
+               strlcpy(buf, "(timestamp out of range)", sizeof(buf));
+               return buf;
+       }
+
        strftime(ts, sizeof(ts), "%Y-%m-%d %H:%M:%S", ltime);
        strftime(zone, sizeof(zone), "%Z", ltime);