diff --git a/backend/src/app/migrations/sql/0144-mod-server-error-report-table.sql b/backend/src/app/migrations/sql/0144-mod-server-error-report-table.sql
index db8eebb477..99d9cbfabf 100644
--- a/backend/src/app/migrations/sql/0144-mod-server-error-report-table.sql
+++ b/backend/src/app/migrations/sql/0144-mod-server-error-report-table.sql
@@ -1,4 +1,11 @@
 ALTER TABLE server_error_report DROP CONSTRAINT server_error_report_pkey;
+
+DELETE FROM server_error_report a
+USING server_error_report b
+WHERE a.id = b.id
+  AND a.ctid < b.ctid;
+
 ALTER TABLE server_error_report ADD PRIMARY KEY (id);
+
 CREATE INDEX server_error_report__version__idx
     ON server_error_report ( version );