diff --git a/Marco.Pms.Services/Service/ProjectServices.cs b/Marco.Pms.Services/Service/ProjectServices.cs
index d9f1424..ab72c8e 100644
--- a/Marco.Pms.Services/Service/ProjectServices.cs
+++ b/Marco.Pms.Services/Service/ProjectServices.cs
@@ -639,6 +639,12 @@ namespace Marco.Pms.Services.Service
                     projectAllocationQuery = projectAllocationQuery
                         .Where(pa => pa.Employee != null && pa.Employee.OrganizationId == organizationId.Value && pa.Employee.Organization != null);
                 }
+                // Conditionally apply the filter for service ID.
+                if (serviceId.HasValue)
+                {
+                    projectAllocationQuery = projectAllocationQuery
+                        .Where(pa => pa.Employee != null && pa.ServiceId == serviceId.Value);
+                }
 
                 var allocations = await projectAllocationQuery
                     .Select(pa => new