diff --git a/pkgs/htdp-pkgs/htdp-test/htdp/tests/convert-drracket-error.rkt b/pkgs/htdp-pkgs/htdp-test/htdp/tests/convert-drracket-error.rkt
index 5a7aa95fd7..f846de3859 100644
--- a/pkgs/htdp-pkgs/htdp-test/htdp/tests/convert-drracket-error.rkt
+++ b/pkgs/htdp-pkgs/htdp-test/htdp/tests/convert-drracket-error.rkt
@@ -7,9 +7,11 @@
 
 (define (Fahrenheit->Celsius x) (* (/ 100 180) (- x 32)))
 
-(convert-file non-error-pth Fahrenheit->Celsius "out.dat")
+(convert-file non-error-pth Fahrenheit->Celsius
+              (build-path (find-system-path 'temp-dir) "out.dat"))
 
 (with-handlers ((exn:fail:read? void))
   "The input file contains a bad header. The next line should raise an exn."
-  (convert-file error-pth Fahrenheit->Celsius "out.dat")
+  (convert-file error-pth Fahrenheit->Celsius
+                (build-path (find-system-path 'temp-dir) "out.dat"))
   (raise `(test "this test should have failed but didn't")))
diff --git a/pkgs/htdp-pkgs/htdp-test/htdp/tests/convert.rkt b/pkgs/htdp-pkgs/htdp-test/htdp/tests/convert.rkt
index 690a705e7e..7786e98025 100644
--- a/pkgs/htdp-pkgs/htdp-test/htdp/tests/convert.rkt
+++ b/pkgs/htdp-pkgs/htdp-test/htdp/tests/convert.rkt
@@ -18,8 +18,8 @@
 (= (f2c -40) -40)
 
 ;; ----------------------------------------------------------------------------
-(define IN "convert-in.dat")
-(define OUT "convert-out.dat")
+(define IN (build-path (find-system-path 'temp-dir) "convert-in.dat"))
+(define OUT (build-path (find-system-path 'temp-dir) "convert-out.dat"))
 
 (define (create-convert-in)
   (printf "212 32\n-40\n"))
diff --git a/pkgs/srfi-pkgs/srfi-lib/srfi/42ref/examples-42.rkt b/pkgs/srfi-pkgs/srfi-lib/srfi/42ref/examples-42.rkt
index 10747df0ac..60324079ee 100644
--- a/pkgs/srfi-pkgs/srfi-lib/srfi/42ref/examples-42.rkt
+++ b/pkgs/srfi-pkgs/srfi-lib/srfi/42ref/examples-42.rkt
@@ -10,10 +10,10 @@
   (require srfi/42)
 
   (define (my-open-output-file filename)
-    (open-output-file filename 'replace 'text) )
+    (open-output-file (build-path (find-system-path 'temp-dir) filename) 'replace 'text) )
 
   (define (my-call-with-input-file filename thunk)
-    (call-with-input-file filename thunk 'text) )
+    (call-with-input-file (build-path (find-system-path 'temp-dir) filename) thunk 'text) )
 
 ; examples.scm starts here -------------------------------------------------
 
diff --git a/pkgs/web-server-pkgs/web-server-test/tests/web-server/pr/10546.rkt b/pkgs/web-server-pkgs/web-server-test/tests/web-server/pr/10546.rkt
index fb4a77939c..eedadd4d44 100644
--- a/pkgs/web-server-pkgs/web-server-test/tests/web-server/pr/10546.rkt
+++ b/pkgs/web-server-pkgs/web-server-test/tests/web-server/pr/10546.rkt
@@ -1,6 +1,6 @@
 #lang racket
 
-(define here (current-directory))
+(define here (find-system-path 'temp-dir))
 (define txt (build-path here "some.txt"))
 
 (with-output-to-file txt
@@ -11,7 +11,7 @@ Here is some text that looks at @this
 END
   )))
 
-(with-output-to-file "relative.rkt"
+(with-output-to-file (build-path here "relative.rkt")
   #:exists 'replace
   (lambda ()
     (display #<<END
@@ -24,7 +24,7 @@ END
 END
   )))
 
-(with-output-to-file "absolute.rkt"
+(with-output-to-file (build-path here "absolute.rkt")
   #:exists 'replace
   (lambda ()
     (display #<<END
@@ -45,11 +45,12 @@ END
 )))
 
 (require tests/eli-tester)
-(define rel (dynamic-require "relative.rkt" 'ans))
-(define abs (dynamic-require "absolute.rkt" 'ans))
-(test
-  rel => abs
-  rel => "Here is some text that looks at 5")
+(parameterize ([current-directory here])
+  (define rel (dynamic-require "relative.rkt" 'ans))
+  (define abs (dynamic-require "absolute.rkt" 'ans))
+  (test
+   rel => abs
+   rel => "Here is some text that looks at 5"))