diff --git a/src/etc/generate-deriving-span-tests.py b/src/etc/generate-deriving-span-tests.py
index d8a52893ea077..31a438958e942 100755
--- a/src/etc/generate-deriving-span-tests.py
+++ b/src/etc/generate-deriving-span-tests.py
@@ -21,7 +21,7 @@
 import os, datetime, stat, re
 
 TEST_DIR = os.path.abspath(
-    os.path.join(os.path.dirname(__file__), '../test/compile-fail'))
+    os.path.join(os.path.dirname(__file__), '../test/ui/derives/'))
 
 YEAR = datetime.datetime.now().year