diff --git a/cmd/sandbox/exception.c b/cmd/sandbox/exception.c
index f9c847d..e015acf 100644
--- a/cmd/sandbox/exception.c
+++ b/cmd/sandbox/exception.c
@@ -6,6 +6,7 @@
  */
 
 #include <command.h>
+#include <env.h>
 
 static int do_sigsegv(struct cmd_tbl *cmdtp, int flag, int argc,
 		      char *const argv[])