diff --git a/collects/racket/private/runtime.ss b/collects/racket/private/runtime.ss
index 72bfa3263a..9d352a576e 100644
--- a/collects/racket/private/runtime.ss
+++ b/collects/racket/private/runtime.ss
@@ -1,5 +1,4 @@
 #lang scheme/base
-(require mzlib/pconvert)
 
 (provide configure)