diff --git a/.travis.yml b/.travis.yml
index 4419525..fdd7ae7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,9 +22,9 @@ env:
     # versions.
     #- RACKET_VERSION=6.0
     #- RACKET_VERSION=6.1
-    - RACKET_VERSION=6.1.1
-    - RACKET_VERSION=6.2
-    - RACKET_VERSION=6.3
+    #- RACKET_VERSION=6.1.1
+    #- RACKET_VERSION=6.2
+    #- RACKET_VERSION=6.3
     - RACKET_VERSION=6.4
     - RACKET_VERSION=6.5
     - RACKET_VERSION=6.6
diff --git a/main.rkt b/main.rkt
index 0945dec..ed2b818 100644
--- a/main.rkt
+++ b/main.rkt
@@ -2,7 +2,7 @@
 
 (require (only-in racket/base [map orig-map]))
 
-(provide map generalize)
+(provide map)
 
 (module m racket/base
   (provide unoptimizable-false)