diff --git a/doc/config.html b/doc/config.html
index e4e4acf8..b225e720 100755
--- a/doc/config.html
+++ b/doc/config.html
@@ -1066,6 +1066,12 @@ XYZ-2005-Nov-002
         Same as <b><code>Preset &lt;attribute&gt;</code></b>, but evaluated for
         replies.
       </li>
+      <li>
+        <b><code>Preset on duplicate &lt;attribute&gt; =
+        &lt;string&gt;</code></b><br>
+        Same as <b><code>Preset &lt;attribute&gt;</code></b>, but evaluated for
+        duplicted entries.
+      </li>
       <li>
         <b><code>Locked Attributes = &lt;list&gt;</code></b><br>
         The attributes specified here cannot be modified when a new entry is
diff --git a/src/elogd.c b/src/elogd.c
index 3249da8d..305910ab 100755
--- a/src/elogd.c
+++ b/src/elogd.c
@@ -8607,6 +8607,28 @@ void show_edit_form(LOGBOOK * lbs, int message_id, BOOL breply, BOOL bedit, BOOL
          }
       }
 
+      sprintf(str, "Preset on duplicate %s", attr_list[index]);
+      if ((i = getcfg(lbs->name, str, preset, sizeof(preset))) > 0 && bduplicate) {
+
+         if (!breedit || (breedit && i == 2)) { /* subst on reedit only if preset is under condition */
+
+            /* do not format date for date attributes */
+            i = build_subst_list(lbs, slist, svalue, attrib,
+                                 (attr_flags[index] & (AF_DATE | AF_DATETIME)) == 0);
+            strsubst_list(preset, sizeof(preset), slist, svalue, i);
+
+            /* check for index substitution */
+            if (!bedit && (strchr(preset, '%') || strchr(preset, '#'))) {
+               /* get index */
+               get_auto_index(lbs, index, preset, str, sizeof(str));
+               strcpy(preset, str);
+            }
+
+            if (!strchr(preset, '%'))
+               strcpy(attrib[index], preset);
+         }
+      }
+
       /* check for p<attribute> */
       sprintf(str, "p%s", attr_list[index]);
       if (isparam(str))
@@ -8670,6 +8692,28 @@ void show_edit_form(LOGBOOK * lbs, int message_id, BOOL breply, BOOL bedit, BOOL
                   strcpy(attrib[index], preset);
             }
          }
+
+         sprintf(str, "Preset on duplicate %s", attr_list[index]);
+         if ((i = getcfg(lbs->name, str, preset, sizeof(preset))) > 0 && bduplicate) {
+
+            if (!breedit || (breedit && i == 2)) { /* subst on reedit only if preset is under condition */
+
+               /* do not format date for date attributes */
+               i = build_subst_list(lbs, slist, svalue, attrib,
+                                    (attr_flags[index] & (AF_DATE | AF_DATETIME)) == 0);
+               strsubst_list(preset, sizeof(preset), slist, svalue, i);
+
+               /* check for index substitution */
+               if (!bedit && (strchr(preset, '%') || strchr(preset, '#'))) {
+                  /* get index */
+                  get_auto_index(lbs, index, preset, str, sizeof(str));
+                  strcpy(preset, str);
+               }
+
+               if (!strchr(preset, '%'))
+                  strcpy(attrib[index], preset);
+            }
+         }
       }
 
    } else // if (_condition[0])