diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index ab2c0c1b38..d81c17ad9e 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -16,6 +16,15 @@
    The license applies to all entries newer than 2009-04-28.
 */
 
+2011-04-23 02:11 UTC+0200 Viktor Szakats (harbour.01 syenar.hu)
+  * ChangeLog
+    ! Missed to document one change:
+      * src/rtl/gtwvt/gtwvt.c
+        % Deleted CS_HREDRAW | CS_VREDRAW flags from Harbour window
+          class. Please make sure to review this, I'm not expert, but
+          these flags are apparently not needed for GTWVT and advised
+          against on many forums.
+
 2011-04-23 02:07 UTC+0200 Viktor Szakats (harbour.01 syenar.hu)
   * INSTALL
     + Added TROUBLESHOOTING/9.: how to submit logs to dev list.
@@ -37,6 +46,10 @@
       will be the ultimate soltion.
     % Dropped fiddling with SetLayeredWindowAttributes() call.
     * Formatting.
+    % Deleted CS_HREDRAW | CS_VREDRAW flags from Harbour window
+      class. Please make sure to review this, I'm not expert, but
+      these flags are apparently not needed for GTWVT and advised
+      against on many forums.
 
   * contrib/make.hbs
     + Added 'verbose' keyword. Equivalent to HB_BUILD_VERBOSE=yes.