diff --git a/server/trace.c b/server/trace.c
index a332821..898998b 100644
--- a/server/trace.c
+++ b/server/trace.c
@@ -246,8 +246,8 @@
 
 static void dump_async_data( const async_data_t *data )
 {
-    fprintf( stderr, "{callback=%p,iosb=%p,arg=%p,event=%p}",
-             data->callback, data->iosb, data->arg, data->event );
+    fprintf( stderr, "{callback=%p,iosb=%p,arg=%p,apc=%p,apc_arg=%p,event=%p}",
+             data->callback, data->iosb, data->arg, data->apc, data->apc_arg, data->event );
 }
 
 static void dump_luid( const luid_t *luid )