diff --git a/frontend/src/lib/forms/MigrationStatusSelect.svelte b/frontend/src/lib/forms/MigrationStatusSelect.svelte
index 99899896e..dcc21df5e 100644
--- a/frontend/src/lib/forms/MigrationStatusSelect.svelte
+++ b/frontend/src/lib/forms/MigrationStatusSelect.svelte
@@ -4,13 +4,12 @@
 
   export let value: ProjectMigrationStatus | "UNMIGRATED" | undefined;
   export let error: string | string[] | undefined = undefined;
-  export let undefinedOptionLabel: string | undefined = undefined;
 
 </script>
 <div class="relative">
   <Select id="migration-status" label="Migration status" bind:value {error} on:change>
     <!-- No need to translate these as this is admin-only -->
-    <option value="">Any</option>
+    <option value={undefined}>Any</option>
     <option value={ProjectMigrationStatus.Migrated}>Migrated</option>
     <option value={ProjectMigrationStatus.Migrating}>Migrating</option>
     <option value="UNMIGRATED">Unmigrated</option>
diff --git a/frontend/src/routes/(authenticated)/admin/+page.svelte b/frontend/src/routes/(authenticated)/admin/+page.svelte
index 2f7f39ad5..a595ddfc6 100644
--- a/frontend/src/routes/(authenticated)/admin/+page.svelte
+++ b/frontend/src/routes/(authenticated)/admin/+page.svelte
@@ -15,7 +15,7 @@
   import type { AdminSearchParams, User } from './+page';
   import ProjectTable from './ProjectTable.svelte';
   import { getSearchParams, queryParam } from '$lib/util/query-params';
-  import type { ProjectType } from '$lib/gql/types';
+  import type { ProjectType, ProjectMigrationStatus } from '$lib/gql/types';
 
   export let data: PageData;
   $: allProjects = data.projects;
@@ -27,7 +27,7 @@
     projectType: queryParam.string<ProjectType | undefined>(undefined),
     userEmail: queryParam.string(undefined),
     projectSearch: queryParam.string<string>(''),
-    migrationStatus: queryParam.string<string>(''),
+    migrationStatus: queryParam.string<ProjectMigrationStatus | "UNMIGRATED" | undefined>(undefined),
   });
 
   const { queryParamValues } = queryParams;
diff --git a/frontend/src/routes/(authenticated)/admin/+page.ts b/frontend/src/routes/(authenticated)/admin/+page.ts
index d3482002a..45505d306 100644
--- a/frontend/src/routes/(authenticated)/admin/+page.ts
+++ b/frontend/src/routes/(authenticated)/admin/+page.ts
@@ -4,7 +4,7 @@ import type { PageLoadEvent } from './$types';
 import { isAdmin, type LexAuthUser } from '$lib/user';
 import { redirect } from '@sveltejs/kit';
 import { getBoolSearchParam, getSearchParam } from '$lib/util/query-params';
-import type { $OpResult, ChangeUserAccountByAdminInput, ChangeUserAccountByAdminMutation, ProjectFilterInput, ProjectType } from '$lib/gql/types';
+import type { $OpResult, ChangeUserAccountByAdminInput, ChangeUserAccountByAdminMutation, ProjectFilterInput, ProjectType, ProjectMigrationStatus } from '$lib/gql/types';
 import type { LoadAdminDashboardProjectsQuery, LoadAdminDashboardUsersQuery } from '$lib/gql/types';
 
 export const _FILTER_PAGE_SIZE = 100;
@@ -15,7 +15,7 @@ export type AdminSearchParams = {
   projectType: ProjectType | undefined,
   userEmail: string | undefined,
   projectSearch: string,
-  migrationStatus: string,
+  migrationStatus: ProjectMigrationStatus | "UNMIGRATED" | undefined,
 };
 
 export type Project = LoadAdminDashboardProjectsQuery['projects'][number];
diff --git a/frontend/src/routes/(authenticated)/admin/ProjectTable.svelte b/frontend/src/routes/(authenticated)/admin/ProjectTable.svelte
index 3118e68ee..8fcab0eb0 100644
--- a/frontend/src/routes/(authenticated)/admin/ProjectTable.svelte
+++ b/frontend/src/routes/(authenticated)/admin/ProjectTable.svelte
@@ -74,7 +74,7 @@ async function softDeleteProject(project: Project): Promise<void> {
     [ProjectMigrationStatus.PrivateRedmine]: 'i-mdi-checkbox-blank-circle-outline',
     [ProjectMigrationStatus.PublicRedmine]: 'i-mdi-checkbox-blank-circle-outline',
   } satisfies Record<ProjectMigrationStatus, string>;
-  function migrationStatusIcon(migrationStatus) {
+  function migrationStatusIcon(migrationStatus?: ProjectMigrationStatus) {
     migrationStatus = migrationStatus ?? ProjectMigrationStatus.Unknown;
     return migrationStatusTable[migrationStatus] ?? migrationStatusTable[ProjectMigrationStatus.Unknown];
   }
@@ -160,8 +160,7 @@ async function softDeleteProject(project: Project): Promise<void> {
                                    undefinedOptionLabel={$t('project_type.any')}/>
             </div>
             <div class="form-control">
-                <MigrationStatusSelect bind:value={$filters.migrationStatus}
-                                       undefinedOptionLabel="Any"/>
+                <MigrationStatusSelect bind:value={$filters.migrationStatus} />
             </div>
             <div class="form-control">
                 <label class="cursor-pointer label gap-4">
diff --git a/frontend/src/routes/(authenticated)/project/[project_code]/+page.svelte b/frontend/src/routes/(authenticated)/project/[project_code]/+page.svelte
index af6ccfc09..ae1182edf 100644
--- a/frontend/src/routes/(authenticated)/project/[project_code]/+page.svelte
+++ b/frontend/src/routes/(authenticated)/project/[project_code]/+page.svelte
@@ -146,7 +146,10 @@
   const migrationStatusIcon = {
     [ProjectMigrationStatus.Migrated]: 'i-mdi-check-circle',
     [ProjectMigrationStatus.Migrating]: 'loading loading-spinner loading-xs',
-  } satisfies Record<ProjectMigrationStatus, IconString>;
+    [ProjectMigrationStatus.Unknown]: undefined,
+    [ProjectMigrationStatus.PrivateRedmine]: undefined,
+    [ProjectMigrationStatus.PublicRedmine]: undefined,
+  } satisfies Record<ProjectMigrationStatus, IconString|undefined>;
   const migrationStatusBadgeVariant = {
     [ProjectMigrationStatus.Migrated]: 'badge-success',
     [ProjectMigrationStatus.Migrating]: 'badge-warning',