diff --git a/src/allmydata/magicfolderdb.py b/src/allmydata/magicfolderdb.py
index 0db1857c2..982b5fe29 100644
--- a/src/allmydata/magicfolderdb.py
+++ b/src/allmydata/magicfolderdb.py
@@ -20,8 +20,8 @@ CREATE TABLE local_files
  mtime               NUMBER,                      -- ST_MTIME
  ctime               NUMBER,                      -- ST_CTIME
  version             INTEGER,
- last_uploaded_uri   VARCHAR(256) UNIQUE,       -- URI:CHK:...
- last_downloaded_uri VARCHAR(256) UNIQUE,       -- URI:CHK:...
+ last_uploaded_uri   VARCHAR(256),                -- URI:CHK:...
+ last_downloaded_uri VARCHAR(256),                -- URI:CHK:...
  last_downloaded_timestamp TIMESTAMP
 );
 """