diff --git a/include/ircd/lexical.h b/include/ircd/lexical.h
index 677abc26a..3c4c24d7a 100644
--- a/include/ircd/lexical.h
+++ b/include/ircd/lexical.h
@@ -21,7 +21,7 @@
  */
 
 #pragma once
-#define HAVE_IRCD_STRING_H
+#define HAVE_IRCD_LEXICAL_H
 
 namespace ircd {