diff --git a/server/AyaNova/biz/WorkOrderBiz.cs b/server/AyaNova/biz/WorkOrderBiz.cs
index e10af8cf..71abce1c 100644
--- a/server/AyaNova/biz/WorkOrderBiz.cs
+++ b/server/AyaNova/biz/WorkOrderBiz.cs
@@ -6211,7 +6211,7 @@ namespace AyaNova.Biz
                                     var existingUnitInfo = await ct.Unit.AsNoTracking().Where(x => x.Id == wiu.UnitId).Select(x => new { x.ContractExpires, x.ContractId }).FirstOrDefaultAsync();
                                     if (existingUnitInfo != null)
                                     {
-                                        if (existingUnitInfo.ContractId != null && existingUnitInfo.ContractId != proposedUnitInfo.ContractId && existingUnitInfo.ContractExpires > DateTime.UtcNow)
+                                        if (existingUnitInfo.ContractId != null && existingUnitInfo.ContractExpires > DateTime.UtcNow)
                                         {
                                             //Ok, we have a pre-existing contract, is it active?
                                             if (await ct.Contract.AsNoTracking().Where(x => x.Id == existingUnitInfo.ContractId).Select(x => x.Active).FirstOrDefaultAsync())
@@ -6226,7 +6226,7 @@ namespace AyaNova.Biz
                         }
                         if (AlreadyHasAContractedUnit)
                         {
-                            AddError(ApiErrorCode.VALIDATION_INVALID_VALUE, "UnitId", await Translate("ErrorOneContractedUnitPerWorkOrderOnly"));
+                            AddError(ApiErrorCode.VALIDATION_WO_MULTIPLE_CONTRACTED_UNITS, "UnitId");
                             return;//this is a completely disqualifying error
                         }
                     }
@@ -6234,7 +6234,7 @@ namespace AyaNova.Biz
                     {
                         currentUnitContract = null;//just in case it's non active but present so later biz actions don't process it
                     }
-                }                
+                }
             }