diff --git a/src/sql/update.execution_logs.2.1.sql b/src/sql/update.execution_logs.2.1.sql
index 5c2dc0b..1760a4b 100644
--- a/src/sql/update.execution_logs.2.1.sql
+++ b/src/sql/update.execution_logs.2.1.sql
@@ -2,6 +2,5 @@ ALTER TABLE execution_logs ADD COLUMN attempt INT DEFAULT 0;
ALTER TABLE execution_logs ADD COLUMN upload_time BIGINT DEFAULT 1420099200000;
UPDATE execution_logs SET upload_time=(UNIX_TIMESTAMP()*1000) WHERE upload_time=1420099200000;
-ALTER TABLE execution_logs DROP PRIMARY KEY;
ALTER TABLE execution_logs ADD PRIMARY KEY(exec_id, name, attempt, start_byte);
-ALTER TABLE execution_logs ADD INDEX ex_log_attempt (exec_id, name, attempt)
+ALTER TABLE execution_logs ADD INDEX ex_log_attempt (exec_id, name, attempt);
