diff --git a/setup.py b/setup.py
index 8fd88a9930a1563ec28bcc6a8c4a4d1fc629b99d..2d31cf4a16497a52999d7c6bf26c254bd9884c81 100644
--- a/setup.py
+++ b/setup.py
@@ -109,7 +109,7 @@ rattail = rattail.commands:main
 rattailw = rattail.commands:main
 
 [edbob.db.extensions]
-rattail = rattail:RattailExtension
+rattail = rattail.db.extension:RattailExtension
 
 [rattail.commands]
 filemon = rattail.commands:FileMonitorCommand