diff --git a/collects/tests/mzscheme/path.ss b/collects/tests/mzscheme/path.ss
index 3bbea9160e..9737c152da 100644
--- a/collects/tests/mzscheme/path.ss
+++ b/collects/tests/mzscheme/path.ss
@@ -443,6 +443,7 @@
 		 (test #t file-exists? filestr)
 		 (test #f file-exists? (string-append filestr "\\"))
 		 (test (file-or-directory-modify-seconds file) file-or-directory-modify-seconds filestr)
+		 (test (file-size file) file-size filestr)
 		 ))
 	     '("\\" "\\\\"))))