diff --git a/compiler/knownfun.lisp b/compiler/knownfun.lisp
index 828e1c2ae12632389c1b8be8b208c317bb1a7781..5e3e23d69d1718ce197ca2ce2067a361fa951bac 100644
--- a/compiler/knownfun.lisp
+++ b/compiler/knownfun.lisp
@@ -16,7 +16,7 @@
 ;;;
 (in-package 'c)
 
-(export '(call unsave unwind any foldable flushable movable predicate))
+(export '(call unsafe unwind any foldable flushable movable predicate))
 
 ;;;; IR1 boolean function attributes:
 ;;;