diff --git a/include/isam.cpp b/include/isam.cpp
index 9a0131eff..22a8201ab 100755
--- a/include/isam.cpp
+++ b/include/isam.cpp
@@ -1051,7 +1051,10 @@ int TBaseisamfile::rewrite(TDate& atdate)
   NOT_OPEN();
   TRectype save_rec(curr());                  
   
+  const int cur_key = getkey();
+  setkey(1);
   _lasterr = cisread(_isamfile, save_rec, _isequal + _nolock); // Si Posiziona per sicurezza...
+  setkey(cur_key);
   if (_lasterr == NOERR)
   {                        
     const int len = DB_reclen(_isamfile->fhnd);
@@ -1081,7 +1084,10 @@ int TBaseisamfile::rewrite(const TRectype& rec, TDate& atdate)
 
   NOT_OPEN(); 
   TRectype save_rec(rec);
+  const int cur_key = getkey();
+  setkey(1);
   _lasterr = cisread(_isamfile, save_rec, _isequal + _nolock); // Si Posiziona per sicurezza...
+  setkey(cur_key);
   if (_lasterr == NOERR)
   {
     const int len = DB_reclen(_isamfile->fhnd);