diff --git a/cpukit/libmisc/shell/main_date.c b/cpukit/libmisc/shell/main_date.c
index 9b970a68a6..6070ff065f 100644
--- a/cpukit/libmisc/shell/main_date.c
+++ b/cpukit/libmisc/shell/main_date.c
@@ -16,10 +16,12 @@
 #include "config.h"
 #endif
 
+#define _GNU_SOURCE
 #include <stdio.h>
 #include <unistd.h>
 #include <string.h>
 #include <errno.h>
+#include <time.h>
 
 #include <rtems.h>
 #include <rtems/shell.h>