diff --git a/collects/rackunit/private/gui/gui.rkt b/collects/rackunit/private/gui/gui.rkt
index 2904ac8c90..408c896cb5 100644
--- a/collects/rackunit/private/gui/gui.rkt
+++ b/collects/rackunit/private/gui/gui.rkt
@@ -40,8 +40,8 @@
     (run-case case model)
     state)
 
-  (foldts for-suite-entry for-suite-exit for-case
-          #f test))
+  (foldts-test-suite for-suite-entry for-suite-exit for-case
+                     #f test))
 
 ;; From old suite-runner:
 #|
diff --git a/collects/rackunit/private/result.rkt b/collects/rackunit/private/result.rkt
index fc5309ab66..54daab4353 100644
--- a/collects/rackunit/private/result.rkt
+++ b/collects/rackunit/private/result.rkt
@@ -33,7 +33,7 @@
 
 (provide (all-defined-out))
 
-;; foldts :
+;; foldts-test-suite :
 ;;   (test-suite string thunk thunk 'a -> 'a)
 ;;   (test-suite string thunk thunk 'a 'a -> 'a)
 ;;   (test-case string thunk 'a -> 'a)
@@ -49,7 +49,7 @@
 ;; between OO and FP.  FP gives up extensibility on
 ;; functions, OO on data.  Here we want extensibility on
 ;; data so FP is a bit ugly].
-(define (foldts fdown fup fhere seed test)
+(define (foldts-test-suite fdown fup fhere seed test)
   (cond
    ((rackunit-test-case? test)
     (fhere test
@@ -61,7 +61,7 @@
    (else
     (raise
      (make-exn:test
-      (format "foldts: Don't know what to do with ~a.  It isn't a test case or test suite." test)
+      (format "foldts-test-suite: Don't know what to do with ~a.  It isn't a test case or test suite." test)
       (current-continuation-marks))))))
 
 
@@ -87,7 +87,7 @@
                            #:run   [run run-test-case]
                            #:fdown [fdown 2nd-arg]
                            #:fup   [fup 2nd-arg])
-  (foldts
+  (foldts-test-suite
    (lambda (suite name before after seed)
      '(printf "into ~a\n" name)
      (before)
diff --git a/collects/rackunit/private/test.rkt b/collects/rackunit/private/test.rkt
index 0d6b4e2ae7..69ee78b1f2 100644
--- a/collects/rackunit/private/test.rkt
+++ b/collects/rackunit/private/test.rkt
@@ -75,7 +75,7 @@
          test-exn
          test-not-exn
 
-         foldts
+         foldts-test-suite
          fold-test-results
          run-test-case
          run-test
diff --git a/collects/rackunit/scribblings/internals.scrbl b/collects/rackunit/scribblings/internals.scrbl
index 0e58bcd25b..586ceb7d8f 100644
--- a/collects/rackunit/scribblings/internals.scrbl
+++ b/collects/rackunit/scribblings/internals.scrbl
@@ -155,7 +155,7 @@ test results without you having to take care of all the expected setup
 and teardown.  For example, @racket[fold-test-results] will run test
 suite before and after actions for you.  However it is still flexible
 enough, via its keyword arguments, to do almost anything that
-@racket[foldts] can.  Hence it should be used in preference to @racket[foldts].
+@racket[foldts-test-suite] can.  Hence it should be used in preference to @racket[foldts-test-suite].
 
 The @racket[result-fn] argument is a function from the results of
 @racket[run] (defaults to a @racket[test-result]) and the seed to a
@@ -203,14 +203,14 @@ value of @racket[run].
    #:run (lambda (name action) 'burp)))]
 
 
-@defproc[(foldts [fdown (test-suite string thunk thunk 'a -> 'a)]
+@defproc[(foldts-test-suite [fdown (test-suite string thunk thunk 'a -> 'a)]
 		 [fup (test-suite string thunk thunk 'a 'a -> 'a)]
 		 [fhere(test-case string thunk 'a -> 'a)]
 		 [seed 'a]
 		 [test (or/c test-case? test-suite?)])
     		 'a]{
 
-The @racket[foldts] function is a nifty tree fold (created by Oleg
+The @racket[foldts-test-suite] function is a nifty tree fold (created by Oleg
 Kiselyov) that folds over a test in a useful way
 (@racket[fold-test-results] isn't that useful as you can't specify
 actions around test cases).
@@ -234,11 +234,11 @@ turn would allow test cases that are, for example, ignored).
 Example:
 
 Here's the implementation of @racket[fold-test-results] in terms of
-@racket[foldts]:
+@racket[foldts-test-suite]:
 
 @racketblock[
 (define (fold-test-results suite-fn case-fn seed test)
-  (foldts
+  (foldts-test-suite
    (lambda (suite name before after seed)
      (before)
      (suite-fn name seed))
@@ -254,7 +254,7 @@ Here's the implementation of @racket[fold-test-results] in terms of
 ]
 
 If you're used to folds you'll probably be a bit surprised that the
-functions you pass to @racket[foldts] receive both the structure they
+functions you pass to @racket[foldts-test-suite] receive both the structure they
 operate on, and the contents of that structure.  This is indeed
 unusual.  It is done to allow subtypes of test-case and test-suite to
 be run in customised ways.  For example, you might define subtypes of