diff --git a/MP-TAB3/Components/InsManual.razor b/MP-TAB3/Components/InsManual.razor
index 5f0e87c8..83196ab3 100644
--- a/MP-TAB3/Components/InsManual.razor
+++ b/MP-TAB3/Components/InsManual.razor
@@ -25,7 +25,14 @@
                         @if (DayImportRatio != 1)
                         {
                             <div class="col-3 my-2 pe-1">
-                                <button class="btn btn-success w-100 px-0" @onclick="() => FreezeDay()" title="Conferma giornata"><i class="fa-solid fa-stamp"></i> Conferma</button>
+                                @if (Math.Abs(DayMinTot * 60 - 1440 * 60) < 2)
+                                {
+                                    <button class="btn btn-success w-100 px-0" @onclick="() => FreezeDay()" title="Conferma giornata"><i class="fa-solid fa-stamp"></i> Conferma</button>
+                                }
+                                else
+                                {
+                                    <button class="btn btn-secondary w-100 px-0 disabled" title="Conferma non permessa per copertura errata gioranta"><i class="fa-solid fa-stamp"></i> Errore Durata</button>
+                                }
                             </div>
                         }
                         else