diff --git a/validation-test/ParseableInterface/verify_all_overlays.py b/validation-test/ParseableInterface/verify_all_overlays.py
index e3668a6e16892..f17a690c9b46e 100755
--- a/validation-test/ParseableInterface/verify_all_overlays.py
+++ b/validation-test/ParseableInterface/verify_all_overlays.py
@@ -50,7 +50,6 @@
         continue
 
     if module_name in [
-        "_Differentiation",
         "DifferentiationUnittest",
         "Swift",
         "SwiftLang",