diff --git a/src/github.com/matrix-org/dendrite/syncapi/storage/account_data_table.go b/src/github.com/matrix-org/dendrite/syncapi/storage/account_data_table.go
index a9b5e3167..981722e56 100644
--- a/src/github.com/matrix-org/dendrite/syncapi/storage/account_data_table.go
+++ b/src/github.com/matrix-org/dendrite/syncapi/storage/account_data_table.go
@@ -38,8 +38,6 @@ CREATE TABLE IF NOT EXISTS syncapi_account_data_type (
     -- Type of the data
     type TEXT NOT NULL,
 
-    PRIMARY KEY(user_id, room_id, type),
-
     -- We don't want two entries of the same type for the same user
     CONSTRAINT syncapi_account_data_unique UNIQUE (user_id, room_id, type)
 );