diff --git a/scsh/time1.h b/scsh/time1.h
index 9b5ab5b..176df0a 100644
--- a/scsh/time1.h
+++ b/scsh/time1.h
@@ -1,3 +1,6 @@
+#include  <sys/types.h>
+#include <time.h>
+
 extern s48_value scheme_time(time_t *secs);
 
 extern s48_value time_plus_ticks(int *hi_secs,  int *lo_secs,