diff --git a/compiler/x86/cell.lisp b/compiler/x86/cell.lisp
index a813079ee48013e74d91fb06254fbdc6e7a4ad34..d3e55a457b80bcc38d485b4c096dfbe7d3f82941 100644
--- a/compiler/x86/cell.lisp
+++ b/compiler/x86/cell.lisp
@@ -7,7 +7,7 @@
 ;;; Scott Fahlman or slisp-group@cs.cmu.edu.
 ;;;
 (ext:file-comment
- "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/compiler/x86/cell.lisp,v 1.8 1999/03/08 00:53:34 dtc Exp $")
+ "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/compiler/x86/cell.lisp,v 1.9 1999/03/23 12:14:50 dtc Exp $")
 ;;;
 ;;; **********************************************************************
 ;;;
@@ -107,6 +107,14 @@
   (:policy :fast)
   (:translate symbol-value))
 
+(export 'kernel::set-symbol-value-conditional "KERNEL")
+(defknown kernel::set-symbol-value-conditional (symbol t t) t (unsafe))
+
+(define-vop (set-symbol-value-conditional cell-set-conditional)
+  (:translate kernel::set-symbol-value-conditional)
+  (:variant symbol-value-slot other-pointer-type)
+  (:policy :fast-safe))
+
 (defknown fast-symbol-value-xadd (symbol fixnum) fixnum ())
 (define-vop (fast-symbol-value-xadd cell-xadd)
   (:variant symbol-value-slot other-pointer-type)