diff --git a/racket/collects/compiler/module-suffix.rkt b/racket/collects/compiler/module-suffix.rkt
index f600ef7967..8823915d54 100644
--- a/racket/collects/compiler/module-suffix.rkt
+++ b/racket/collects/compiler/module-suffix.rkt
@@ -52,7 +52,8 @@
   (define suffixes
     (get-module-suffixes #:mode key #:group group #:namespace namespace))
   (byte-pregexp
-   (bytes-append #"^(.*)\\.(?i:"
+   (bytes-append #"^([^.].*)\\.(?i:"
                  (apply bytes-append
                         (add-between suffixes #"|"))
                  #")$")))
+