diff --git a/DfE.FindInformationAcademiesTrusts/Pages/OtherServicesLinkBuilder.cs b/DfE.FindInformationAcademiesTrusts/Pages/OtherServicesLinkBuilder.cs
index 00757cb72..fa5a94e45 100644
--- a/DfE.FindInformationAcademiesTrusts/Pages/OtherServicesLinkBuilder.cs
+++ b/DfE.FindInformationAcademiesTrusts/Pages/OtherServicesLinkBuilder.cs
@@ -8,7 +8,7 @@ public interface IOtherServicesLinkBuilder
     string? FindSchoolPerformanceDataListingLink(string uid, TrustType trustType, string? satAcademyUrn);
     string GetInformationAboutSchoolsListingLinkForTrust(string trustUid);
     string GetInformationAboutSchoolsListingLinkForAcademy(string urn);
-    string? SharepointFolderLink(string groupId);
+    string SharepointFolderLink(string groupId);
 
     string? FinancialBenchmarkingInsightsToolListingLink(string? companiesHouseNumber);
 }
diff --git a/DfE.FindInformationAcademiesTrusts/Pages/Trusts/Overview/TrustDetails.cshtml.cs b/DfE.FindInformationAcademiesTrusts/Pages/Trusts/Overview/TrustDetails.cshtml.cs
index 7755318c7..15e61b6db 100644
--- a/DfE.FindInformationAcademiesTrusts/Pages/Trusts/Overview/TrustDetails.cshtml.cs
+++ b/DfE.FindInformationAcademiesTrusts/Pages/Trusts/Overview/TrustDetails.cshtml.cs
@@ -18,7 +18,7 @@ public class TrustDetailsModel(
     public string? GetInformationAboutSchoolsLink { get; set; }
     public string? FinancialBenchmarkingInsightsToolLink { get; set; }
     public string? FindSchoolPerformanceLink { get; set; }
-    public string? SharepointLink { get; set; }
+    public string SharepointLink { get; set; } = string.Empty;
 
     public override async Task<IActionResult> OnGetAsync()
     {