diff --git a/collects/tests/mzscheme/unit.ss b/collects/tests/mzscheme/unit.ss
index d86308d..e997409 100644
--- a/collects/tests/mzscheme/unit.ss
+++ b/collects/tests/mzscheme/unit.ss
@@ -595,8 +595,6 @@
 	  #f y)
 	x))
 
-(require scheme/namespace)
-
 (test 55 'namespace
       (parameterize ([current-namespace (make-base-namespace)])
 	(namespace-variable-bind/invoke-unit
diff --git a/collects/tests/mzscheme/unitsig.ss b/collects/tests/mzscheme/unitsig.ss
index 56917a9..654fb2e 100644
--- a/collects/tests/mzscheme/unitsig.ss
+++ b/collects/tests/mzscheme/unitsig.ss
@@ -603,8 +603,6 @@
 	    (define foo 12)))
 	foo))
 
-(require scheme/namespace)
-
 (test 120
       'namespace
       (parameterize ([current-namespace (make-base-namespace)])