diff --git a/storage/sqlite/sqlite-storage.go b/storage/sqlite/sqlite-storage.go
index 771c3452..75520e77 100644
--- a/storage/sqlite/sqlite-storage.go
+++ b/storage/sqlite/sqlite-storage.go
@@ -33,7 +33,7 @@ func initConn(conn conn, wal bool) error {
 			return err
 		}
 	}
-	err = sqlitex.ExecTransient(conn, `pragma mmap_size=1000000000`, nil)
+	err = sqlitex.ExecTransient(conn, `pragma mmap_size=1000000000000`, nil)
 	if err != nil {
 		return err
 	}