diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index 2a20e2df90..394305b8b7 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -16,6 +16,11 @@
    The license applies to all entries newer than 2009-04-28.
 */
 
+2011-09-24 11:49 UTC+0200 Viktor Szakats (harbour.01 syenar.hu)
+  * contrib/hbmzip/mzip.c
+    ! HB_UNZIPFILEINFO(): date returned was off by one month.
+      Report and fix by Juan Galvez.
+
 2011-09-24 11:10 UTC+0200 Przemyslaw Czerpak (druzus/at/priv.onet.pl)
   * harbour/include/hbtrace.h
   * harbour/src/common/hbtrace.c
diff --git a/harbour/contrib/hbmzip/mzip.c b/harbour/contrib/hbmzip/mzip.c
index 4c87517657..63759d4e2b 100644
--- a/harbour/contrib/hbmzip/mzip.c
+++ b/harbour/contrib/hbmzip/mzip.c
@@ -472,7 +472,7 @@ HB_FUNC( HB_UNZIPFILEINFO )
          szFileName[ HB_PATH_MAX - 1 ] = '\0';
          hb_storc( szFileName, 2 );
 
-         lJulian   = hb_dateEncode( ufi.tmu_date.tm_year, ufi.tmu_date.tm_mon,
+         lJulian   = hb_dateEncode( ufi.tmu_date.tm_year, ufi.tmu_date.tm_mon + 1,
                                     ufi.tmu_date.tm_mday );
          lMillisec = hb_timeEncode( ufi.tmu_date.tm_hour, ufi.tmu_date.tm_min,
                                     ufi.tmu_date.tm_sec, 0 );