diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index f0b2cff703..1d3694cab9 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -16,6 +16,11 @@
    The license applies to all entries newer than 2009-04-28.
 */
 
+2010-10-22 09:32 UTC-0800 Pritpal Bedi (bedipritpal@hotmail.com)
+  * contrib/hbide/idemisc.prg
+    ! Fixed: a possible bug where .h files included in .hbp were 
+      not guarded against -3rd=file=.
+
 2010-10-22 17:49 UTC+0200 Viktor Szakats (harbour.01 syenar.hu)
   * contrib/hbwin/win_os.prg
     + WIN_OSNETREGOK() extended to disable some SMB2 internal caches,
diff --git a/harbour/contrib/hbide/idemisc.prg b/harbour/contrib/hbide/idemisc.prg
index a1d54668cd..28a0fecaff 100644
--- a/harbour/contrib/hbide/idemisc.prg
+++ b/harbour/contrib/hbide/idemisc.prg
@@ -2197,15 +2197,17 @@ FUNCTION app_image( cName )
 /*----------------------------------------------------------------------*/
 
 FUNCTION hbide_isCompilerSource( cSource, cIncList )
-   LOCAL cExt
+   LOCAL cExt, aExt
 
    DEFAULT cIncList TO ".c,.cpp,.prg,.hbs,.rc,.res,.hbm,.hbc,.qrc,.ui"
 
    cIncList := lower( cIncList )
+   aExt := hb_aTokens( lower( cIncList ), "," )
 
    hb_FNameSplit( cSource, , , @cExt )
+   cExt := lower( cExt )
 
-   RETURN lower( cExt ) $ cIncList
+   RETURN ascan( aExt, {|e| cExt == e } ) > 0
 
 /*----------------------------------------------------------------------*/