diff --git a/bootfiles/18c/boot6.lisp b/bootfiles/18c/boot6.lisp
index ae19879782dcb7236a747fc2085acfdacc928237..ad3692ff32c7fe20a872e70b9bdf75381f176007 100644
--- a/bootfiles/18c/boot6.lisp
+++ b/bootfiles/18c/boot6.lisp
@@ -5,5 +5,5 @@
 #+sparc
 (in-package :sparc)
 #+sparc
-(defconstant pseudo-atomic-trap 16))
+(defconstant pseudo-atomic-trap 16)