diff --git a/orm/contest.go b/orm/contest.go
index 44cfb6dd..7ae62b59 100644
--- a/orm/contest.go
+++ b/orm/contest.go
@@ -31,8 +31,12 @@ type Contest struct {
 	NumQuestions          int
 	NumAnswersPerQuestion int
 
+	ResetStartTime bool
+
 	Questions    []*Question
 	Participants []*Participant `gorm:"many2many:subscriptions"`
+
+	prevStartTime time.Time
 }
 
 func (c *Contest) GetID() uint { return c.ID }
@@ -127,6 +131,9 @@ func (c *Contest) Update(db *Database, args map[string]string, w http.ResponseWr
 			return nil, err
 		}
 
+		// FIXME: Should not be hard set.
+		contest.(*Contest).ResetStartTime = false
+
 		err = r.ParseForm()
 		if err != nil {
 			return nil, err
@@ -154,10 +161,21 @@ func (c *Contest) Update(db *Database, args map[string]string, w http.ResponseWr
 		if err != nil {
 			return nil, err
 		}
+
 		contest, err = c.Read(db, args, w, r)
 		if err != nil {
 			return nil, err
 		}
+
+		// Optionally reset participant start time
+		if contest.(*Contest).ResetStartTime {
+			err := db._db.Debug().Model(&Response{}).Where("contest_id=?", contest.(*Contest).ID).Update("start_time", time.Time{}).Error
+			if err != nil {
+				return nil, err
+			}
+
+		}
+
 		return contest.(*Contest), nil
 	}
 }
diff --git a/templates/contests_add_update.html.tpl b/templates/contests_add_update.html.tpl
index ee6cb9ef..c3452755 100644
--- a/templates/contests_add_update.html.tpl
+++ b/templates/contests_add_update.html.tpl
@@ -54,6 +54,15 @@
       {{template "input" dict "options" ($options|yaml) "value" (.Data|field "NumAnswersPerQuestion") "update" $update}}
     </div>
   </div>
+
+  {{if $update}}
+  <div class="form-row">
+    <div class="col">
+      {{$options := ` { name: "ResetStartTime",id: "contest_reset_start_time",label: "Resetta la prima eventuale visualizzazione dei partecipanti",formClass: "form-check form-check-inline" } `}}
+      {{template "checkbox" dict "options" ($options|yaml) "value" (.Data|field "ResetStartTime") "update" $update}}
+    </div>
+  </div>
+  {{end}}
   
   {{$options := ` { cancelTitle: "Annulla", saveTitle: "Salva", model: "Contest" }`}} 
   {{template "submit_cancel_buttons" dict "options" ($options|yaml) "id" (.Data|field "ID") "update" $update}}