diff --git a/basis/html/components/components-tests.factor b/basis/html/components/components-tests.factor
index 410c3ce223..0b85455c2e 100644
--- a/basis/html/components/components-tests.factor
+++ b/basis/html/components/components-tests.factor
@@ -4,6 +4,8 @@ io.streams.null accessors inspector html.streams
 html.components html.forms namespaces
 xml.writer ;
 
+\ render must-infer
+
 [ ] [ begin-form ] unit-test
 
 [ ] [ 3 "hi" set-value ] unit-test
diff --git a/basis/xmode/code2html/code2html-tests.factor b/basis/xmode/code2html/code2html-tests.factor
index c0b8a1b560..241ab7ff75 100644
--- a/basis/xmode/code2html/code2html-tests.factor
+++ b/basis/xmode/code2html/code2html-tests.factor
@@ -3,6 +3,8 @@ USING: xmode.code2html xmode.catalog
 tools.test multiline splitting memoize
 kernel io.streams.string xml.writer ;
 
+\ htmlize-file must-infer
+
 [ ] [ \ (load-mode) reset-memoized ] unit-test
 
 [ ] [