diff --git a/cmd/stackprot_test.c b/cmd/stackprot_test.c
index e7ff4a0..78e9beb 100644
--- a/cmd/stackprot_test.c
+++ b/cmd/stackprot_test.c
@@ -4,6 +4,7 @@
  */
 
 #include <command.h>
+#include <linux/string.h>
 
 static int do_test_stackprot_fail(struct cmd_tbl *cmdtp, int flag, int argc,
 				  char *const argv[])