diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index 7b00e62d49..2b00bbe5dc 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -8,6 +8,10 @@
    2008-12-31 13:59 UTC+0100 Foo Bar (foo.bar foobar.org)
 */
 
+2008-10-10 10:50 UTC+0200 Viktor Szakats (harbour.01 syenar hu)
+  * include/hbextern.ch
+    ! Fixed XPP class names.
+
 2008-10-10 10:42 UTC+0200 Viktor Szakats (harbour.01 syenar hu)
   * make_b32.mak
   * make_vc.mak
diff --git a/harbour/include/hbextern.ch b/harbour/include/hbextern.ch
index 6f69e64640..de610db41a 100644
--- a/harbour/include/hbextern.ch
+++ b/harbour/include/hbextern.ch
@@ -782,7 +782,8 @@ EXTERNAL THREADID
 EXTERNAL THREADWAIT
 EXTERNAL THREADWAITALL
 EXTERNAL THREADOBJECT
-EXTERNAL TTHREAD
+EXTERNAL THREAD
+EXTERNAL SIGNAL
 
 #endif /* HB_COMPAT_XPP */