diff --git a/collects/net/imap.ss b/collects/net/imap.ss
index 551218a4de..5c3bb9ef4d 100644
--- a/collects/net/imap.ss
+++ b/collects/net/imap.ss
@@ -1,11 +1,11 @@
 
 (module imap mzscheme
-  (import (lib "unitsig.ss"))
+  (require (lib "unitsig.ss"))
 
-  (import "imap-sig.ss")
-  (import "imap-unit.ss")
+  (require "imap-sig.ss")
+  (require "imap-unit.ss")
 
   (define-values/invoke-unit/sig net:imap^
     net:imap@)
 
-  (export-signature-elements net:imap^))
+  (provide-signature-elements net:imap^))
diff --git a/collects/net/smtp.ss b/collects/net/smtp.ss
index b3c169fc1c..3f4cebcc8c 100644
--- a/collects/net/smtp.ss
+++ b/collects/net/smtp.ss
@@ -1,11 +1,11 @@
 
 (module smtp mzscheme
-  (import (lib "unitsig.ss"))
+  (require (lib "unitsig.ss"))
 
-  (import "smtp-sig.ss")
-  (import "smtp-unit.ss")
+  (require "smtp-sig.ss")
+  (require "smtp-unit.ss")
 
   (define-values/invoke-unit/sig net:smtp^
     net:smtp@)
 
-  (export-signature-elements net:smtp^))
+  (provide-signature-elements net:smtp^))