diff --git a/cde/programs/dtsession/SmSave.c b/cde/programs/dtsession/SmSave.c
index 6db2e4a54..161c52f12 100644
--- a/cde/programs/dtsession/SmSave.c
+++ b/cde/programs/dtsession/SmSave.c
@@ -53,6 +53,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <dirent.h>
+#include <time.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/param.h>
diff --git a/cde/programs/dtsession/SmUI.c b/cde/programs/dtsession/SmUI.c
index 263d8ff19..48cbb1749 100644
--- a/cde/programs/dtsession/SmUI.c
+++ b/cde/programs/dtsession/SmUI.c
@@ -55,6 +55,9 @@
  **
  *****************************************************************************
  *************************************<+>*************************************/
+#ifndef _XOPEN_SOURCE
+# define _XOPEN_SOURCE 600
+#endif
 
 #include <signal.h>
 #include <stdio.h>