diff --git a/content/research/crazyrhythms.md b/content/research/crazyrhythms.md
index b332f04..d4c8027 100644
--- a/content/research/crazyrhythms.md
+++ b/content/research/crazyrhythms.md
@@ -1,6 +1,6 @@
 +++
 title = "Maddening Rhythms"
-has_factors = ["scientificmanagement.md", "MTMinItaly.md", "Noxiousness.md"]
+has_factors = ["scientificmanagement.md", "MTMinItaly.md", "Noxiousness.md", "doppelganger.md"]
 +++