diff --git a/ChangeLog b/ChangeLog
index 843196feb..3360713c3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2011-04-29  Robert Larice
+ * src/spicelib/devices/hisimhv/hsmhvdef.h :
+    hisimhv implementation, ngspice has one more slot (GENowner) in GENinstance
+
+2011-04-29  Dietmar Warning
+ * src/spicelib/devices/hisimhv/** :
+ * **/*	:
+     add the HiSIM_HV model vers. 1.2.1
+
 2011-04-28  Robert Larice
  * src/frontend/inpcom.c ,
     bug fix, (#329233)
diff --git a/src/spicelib/devices/hisimhv/hsmhvdef.h b/src/spicelib/devices/hisimhv/hsmhvdef.h
index 1ef624c1c..5d03de0c3 100644
--- a/src/spicelib/devices/hisimhv/hsmhvdef.h
+++ b/src/spicelib/devices/hisimhv/hsmhvdef.h
@@ -217,6 +217,7 @@ typedef struct sHSMHVinstance {
   struct sHSMHVinstance *HSMHVnextInstance;  /* pointer to next instance of 
                                               current model*/
   IFuid HSMHVname; /* pointer to character string naming this instance */
+  int HSMHVowner;  /* number of owner process (ngspice specific !) */
   int HSMHVstates; /* index into state table for this device */
 
   int HSMHVdNode;      /* number of the drain node of the mosfet */