--- a/src/code/save.lisp
+++ b/src/code/save.lisp
@@ -194,6 +194,8 @@
 
 (defun deinit ()
   (call-hooks "save" *save-hooks*)
+  #!+sb-wtimer
+  (itimer-emulation-deinit)
   (when (rest (sb!thread:list-all-threads))
     (error "Cannot save core with multiple threads running."))
   (float-deinit)