diff --git a/.vscode/settings.json b/.vscode/settings.json
index bbab22fea..81fb89d64 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -7,6 +7,7 @@
   "typescript.tsdk": "node_modules/typescript/lib",
   "editor.tabSize": 2,
   "cSpell.words": [
+    "backlinks",
     "Cdfc",
     "cjsx",
     "clsx",
diff --git a/apps/backend/prisma/migrations/20241223205737_remove_empty_profile_images/migration.sql b/apps/backend/prisma/migrations/20241223205737_remove_empty_profile_images/migration.sql
new file mode 100644
index 000000000..9455f430e
--- /dev/null
+++ b/apps/backend/prisma/migrations/20241223205737_remove_empty_profile_images/migration.sql
@@ -0,0 +1,4 @@
+-- Some older versions allowed the empty string as a profile image.
+-- We fix that.
+
+UPDATE "ProjectUser" SET "profileImageUrl" = NULL WHERE "profileImageUrl" = '';
diff --git a/apps/backend/prisma/schema.prisma b/apps/backend/prisma/schema.prisma
index 5f008a58d..c3b25ce63 100644
--- a/apps/backend/prisma/schema.prisma
+++ b/apps/backend/prisma/schema.prisma
@@ -1,6 +1,3 @@
-// This is your Prisma schema file,
-// learn more about it in the docs: https://pris.ly/d/prisma-schema
-
 generator client {
   provider        = "prisma-client-js"
   previewFeatures = ["tracing", "relationJoins"]
diff --git a/apps/e2e/tests/backend/endpoints/api/v1/users.test.ts b/apps/e2e/tests/backend/endpoints/api/v1/users.test.ts
index 425c40053..dd5a2d9d4 100644
--- a/apps/e2e/tests/backend/endpoints/api/v1/users.test.ts
+++ b/apps/e2e/tests/backend/endpoints/api/v1/users.test.ts
@@ -1666,4 +1666,29 @@ describe("with server access", () => {
       }
     `);
   });
+
+  it("should not be able to set profile image url to empty string", async ({ expect }) => {
+    await Auth.Otp.signIn();
+    const response = await niceBackendFetch("/api/v1/users/me", {
+      accessType: "server",
+      method: "PATCH",
+      body: {
+        profile_image_url: "",
+      },
+    });
+    expect(response).toMatchInlineSnapshot(`
+      NiceResponse {
+        "status": 400,
+        "body": {
+          "code": "SCHEMA_ERROR",
+          "details": { "message": "Request validation failed on PATCH /api/v1/users/me:\\n  - body.profile_image_url is not a valid URL" },
+          "error": "Request validation failed on PATCH /api/v1/users/me:\\n  - body.profile_image_url is not a valid URL",
+        },
+        "headers": Headers {
+          "x-stack-known-error": "SCHEMA_ERROR",
+          <some fields may have been hidden>,
+        },
+      }
+    `);
+  });
 });