diff --git a/Chapter-4-applying-tactical-domain-driven-design/Fitnet.Contracts/Src/Fitnet.Contracts.Core/AddAnnex/AttachedAnnexToBindingContractEvent.cs b/Chapter-4-applying-tactical-domain-driven-design/Fitnet.Contracts/Src/Fitnet.Contracts.Core/AddAnnex/AnnexAttachedToBindingContractEvent.cs
similarity index 80%
rename from Chapter-4-applying-tactical-domain-driven-design/Fitnet.Contracts/Src/Fitnet.Contracts.Core/AddAnnex/AttachedAnnexToBindingContractEvent.cs
rename to Chapter-4-applying-tactical-domain-driven-design/Fitnet.Contracts/Src/Fitnet.Contracts.Core/AddAnnex/AnnexAttachedToBindingContractEvent.cs
index fcc111f5..516ae1f8 100644
--- a/Chapter-4-applying-tactical-domain-driven-design/Fitnet.Contracts/Src/Fitnet.Contracts.Core/AddAnnex/AttachedAnnexToBindingContractEvent.cs
+++ b/Chapter-4-applying-tactical-domain-driven-design/Fitnet.Contracts/Src/Fitnet.Contracts.Core/AddAnnex/AnnexAttachedToBindingContractEvent.cs
@@ -2,14 +2,14 @@
 
 using DomainDrivenDesign.BuildingBlocks;
 
-public sealed record AttachedAnnexToBindingContractEvent(
+public sealed record AnnexAttachedToBindingContractEvent(
     Guid Id,
     AnnexId AnnexId,
     BindingContractId BindingContractId,
     DateTimeOffset ValidFrom,
     DateTime OccuredAt) : IDomainEvent
 {
-    internal static AttachedAnnexToBindingContractEvent Raise(
+    internal static AnnexAttachedToBindingContractEvent Raise(
         AnnexId annexId,
         BindingContractId bindingContractId,
         DateTimeOffset validFrom)
diff --git a/Chapter-4-applying-tactical-domain-driven-design/Fitnet.Contracts/Src/Fitnet.Contracts.Core/Annex.cs b/Chapter-4-applying-tactical-domain-driven-design/Fitnet.Contracts/Src/Fitnet.Contracts.Core/Annex.cs
index 73b7aba8..248333b2 100644
--- a/Chapter-4-applying-tactical-domain-driven-design/Fitnet.Contracts/Src/Fitnet.Contracts.Core/Annex.cs
+++ b/Chapter-4-applying-tactical-domain-driven-design/Fitnet.Contracts/Src/Fitnet.Contracts.Core/Annex.cs
@@ -18,7 +18,7 @@ private Annex(BindingContractId bindingContractId, DateTimeOffset validFrom)
         BindingContractId = bindingContractId;
         ValidFrom = validFrom;
 
-        var @event = AttachedAnnexToBindingContractEvent.Raise(Id, BindingContractId, ValidFrom);
+        var @event = AnnexAttachedToBindingContractEvent.Raise(Id, BindingContractId, ValidFrom);
         RecordEvent(@event);
     }