diff --git a/include/linux/string.h b/include/linux/string.h
index bb1d5ab07e3..d67998e5c41 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -91,6 +91,11 @@ extern __kernel_size_t strnlen(const char *,__kernel_size_t);
 size_t strcspn(const char *s, const char *reject);
 #endif
 
+#ifdef CONFIG_SANDBOX
+# define strdup		sandbox_strdup
+# define strndup		sandbox_strndup
+#endif
+
 #ifndef __HAVE_ARCH_STRDUP
 extern char * strdup(const char *);
 extern char * strndup(const char *, size_t);