diff --git a/bootfiles/18c/boot3.lisp b/bootfiles/18c/boot3.lisp
index b432038362e53777acffb165668c9a68f0dcf3da..efee380ebe0db9cddda0fc57f3cd6d3e828b012f 100644
--- a/bootfiles/18c/boot3.lisp
+++ b/bootfiles/18c/boot3.lisp
@@ -12,4 +12,7 @@
 	    GET-SETF-METHOD)
 	  :lisp)
 
+;;; Needed before load of exports.lisp to bootstrap ANSI defstruct fix
+(intern "*ANSI-DEFSTRUCT-OPTIONS-P*" :kernel)
+
 (load "target:code/exports.lisp")