usage bb_dev_null
diff --git a/libbb/messages.c b/libbb/messages.c
index e6e4dc3..9a77aa6 100644
--- a/libbb/messages.c
+++ b/libbb/messages.c
@@ -97,7 +97,7 @@
 const char * const bb_default_login_shell = LIBBB_DEFAULT_LOGIN_SHELL;
 #endif
 
-#ifdef L_dev_null
-const char * const bb_dev_null = "dev/null";
+#ifdef L_bb_dev_null
+const char * const bb_dev_null = "/dev/null";
 #endif