diff --git a/drizzle/0036_broken_rattler.sql b/drizzle/0036_broken_rattler.sql
index a98f2aa..ab22549 100644
--- a/drizzle/0036_broken_rattler.sql
+++ b/drizzle/0036_broken_rattler.sql
@@ -1,4 +1,4 @@
-CREATE TABLE `webImportSources` (
+CREATE TABLE IF NOT EXISTS `webImportSources` (
 	`id` int AUTO_INCREMENT NOT NULL,
 	`userId` int NOT NULL,
 	`name` varchar(100) NOT NULL,
diff --git a/server/webImportSourcesMigration.test.ts b/server/webImportSourcesMigration.test.ts
new file mode 100644
index 0000000..caf04b6
--- /dev/null
+++ b/server/webImportSourcesMigration.test.ts
@@ -0,0 +1,21 @@
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+import { describe, expect, it } from "vitest";
+
+const migration = readFileSync(
+  resolve(process.cwd(), "drizzle/0036_broken_rattler.sql"),
+  "utf8",
+);
+
+describe("webImportSources migration", () => {
+  it("peut être appliquée sans échec si la table a déjà été créée", () => {
+    expect(migration).toMatch(/CREATE TABLE IF NOT EXISTS `webImportSources`/);
+  });
+
+  it("définit les colonnes nécessaires au connecteur sans modifier les factures", () => {
+    expect(migration).toContain("`portalUrl` varchar(500) NOT NULL");
+    expect(migration).toContain("`loginPassword` text NOT NULL");
+    expect(migration).toContain("`apiToken` varchar(128) NOT NULL");
+    expect(migration).not.toContain("invoices");
+  });
+});