diff --git a/dlls/ntdll/sync.c b/dlls/ntdll/sync.c
index 28a5addaf93..2e97b35912d 100644
--- a/dlls/ntdll/sync.c
+++ b/dlls/ntdll/sync.c
@@ -674,9 +674,6 @@ static void call_apcs( BOOL alertable )
         {
         case APC_NONE:
             return;  /* no more APCs */
-        case APC_ASYNC:
-            proc( arg1, arg2 );
-            break;
         case APC_USER:
             proc( arg1, arg2, arg3 );
             break;
diff --git a/include/wine/server_protocol.h b/include/wine/server_protocol.h
index 6eff623b74f..24b935ef8c0 100644
--- a/include/wine/server_protocol.h
+++ b/include/wine/server_protocol.h
@@ -512,7 +512,7 @@ struct get_apc_reply
     void*        arg2;
     void*        arg3;
 };
-enum apc_type { APC_NONE, APC_USER, APC_TIMER, APC_ASYNC, APC_ASYNC_IO };
+enum apc_type { APC_NONE, APC_USER, APC_TIMER, APC_ASYNC_IO };
 
 
 
@@ -3882,6 +3882,6 @@ union generic_reply
     struct set_mailslot_info_reply set_mailslot_info_reply;
 };
 
-#define SERVER_PROTOCOL_VERSION 167
+#define SERVER_PROTOCOL_VERSION 168
 
 #endif /* __WINE_WINE_SERVER_PROTOCOL_H */
diff --git a/server/protocol.def b/server/protocol.def
index a95768667eb..2f272c6ed99 100644
--- a/server/protocol.def
+++ b/server/protocol.def
@@ -416,7 +416,7 @@ typedef struct
     void*        arg2;
     void*        arg3;
 @END
-enum apc_type { APC_NONE, APC_USER, APC_TIMER, APC_ASYNC, APC_ASYNC_IO };
+enum apc_type { APC_NONE, APC_USER, APC_TIMER, APC_ASYNC_IO };
 
 
 /* Close a handle for the current process */