diff --git a/plugins/sudoers/env.c b/plugins/sudoers/env.c
index ce1e7e612..1e57d2c42 100644
--- a/plugins/sudoers/env.c
+++ b/plugins/sudoers/env.c
@@ -89,9 +89,6 @@
 #undef KEPT_MAX
 #define KEPT_MAX    	0xff00
 
-#undef VNULL
-#define	VNULL	(void *)NULL
-
 struct environment {
     char **envp;		/* pointer to the new environment */
     size_t env_size;		/* size of new_environ in char **'s */