diff --git a/core/io/files/files-tests.factor b/core/io/files/files-tests.factor
index 3104fcdb55..4299634642 100644
--- a/core/io/files/files-tests.factor
+++ b/core/io/files/files-tests.factor
@@ -283,3 +283,6 @@ USE: debugger.threads
     [ "resource:core/bootstrap/stage2.factor" (normalize-path) ]
     unit-test
 ] with-scope
+
+[ t ] [ "/" file-system-info file-system-info? ] unit-test
+[ t ] [ file-systems [ file-system-info? ] all? ] unit-test