diff --git a/stepmania/src/tests/test_file_errors.cpp b/stepmania/src/tests/test_file_errors.cpp
index eb8c4ef641..33a9f6c699 100644
--- a/stepmania/src/tests/test_file_errors.cpp
+++ b/stepmania/src/tests/test_file_errors.cpp
@@ -97,6 +97,8 @@ RageFileDriverTest::RageFileDriverTest( CString root_ ):
 	RageFileDriver( new TestFilenameDB(root_) ),
 	root(root_)
 {
+	if( root.Right(1) != "/" )
+		root += '/';
 }