diff --git a/api/src/lu/foyer/JsonApiController.scala b/api/src/lu/foyer/JsonApiController.scala
index 5fdda84..8a6b8f2 100644
--- a/api/src/lu/foyer/JsonApiController.scala
+++ b/api/src/lu/foyer/JsonApiController.scala
@@ -103,7 +103,10 @@ trait JsonApiController:
       endpoint.implement(input =>
         for
           item <- f(input)
-                    .tapErrorCause(ZIO.logErrorCause(_))
+                    .tapError {
+                      case t: Throwable    => ZIO.logErrorCause(Cause.fail(t))
+                      case _: JsonApiError => ZIO.unit
+                    }
                     .mapError {
                       case e: Throwable    => JsonApiError.InternalServerError(e.getMessage)
                       case e: JsonApiError => e
diff --git a/core/src/lu/foyer/EventSourcing.scala b/core/src/lu/foyer/EventSourcing.scala
index 8d765d0..6875137 100644
--- a/core/src/lu/foyer/EventSourcing.scala
+++ b/core/src/lu/foyer/EventSourcing.scala
@@ -34,8 +34,7 @@ trait CommandHandlerCreate[Command: Schema, Event] extends CommandHandler[Comman
 
 trait CommandHandlerUpdate[Command: Schema, Event, State]
     extends CommandHandler[Command, Event, State]:
-  def onCommand(entityId: String, state: State, command: Command)
-    : IO[JsonApiError | Throwable, Event]
+  def onCommand(entityId: String, state: State, command: Command) : IO[JsonApiError | Throwable, Event]
   val isCreate      = false
   val commandSchema = summon[Schema[Command]]