diff --git a/PKHeX.Core/Saves/SAV4HGSS.cs b/PKHeX.Core/Saves/SAV4HGSS.cs
index 92b5e654a..3ce686867 100644
--- a/PKHeX.Core/Saves/SAV4HGSS.cs
+++ b/PKHeX.Core/Saves/SAV4HGSS.cs
@@ -80,7 +80,7 @@ public int Counter
 
         public override void SetBoxName(int box, string value)
         {
-            const int maxlen = BOX_NAME_LEN / 2;
+            const int maxlen = 8;
             if (value.Length > maxlen)
                 value = value.Substring(0, maxlen); // Hard cap
             int offset = GetBoxNameOffset(box);
diff --git a/PKHeX.Core/Saves/SAV4Sinnoh.cs b/PKHeX.Core/Saves/SAV4Sinnoh.cs
index cae16d8f4..bed0f99af 100644
--- a/PKHeX.Core/Saves/SAV4Sinnoh.cs
+++ b/PKHeX.Core/Saves/SAV4Sinnoh.cs
@@ -47,7 +47,7 @@ public int Unknown
 
         public override void SetBoxName(int box, string value)
         {
-            const int maxlen = BOX_NAME_LEN / 2;
+            const int maxlen = 8;
             if (value.Length > maxlen)
                 value = value.Substring(0, maxlen); // Hard cap
             int offset = GetBoxNameOffset(box);
diff --git a/PKHeX.Core/Saves/Substructures/Gen7/BoxLayout7.cs b/PKHeX.Core/Saves/Substructures/Gen7/BoxLayout7.cs
index c5260b1b9..1e3a7c3bc 100644
--- a/PKHeX.Core/Saves/Substructures/Gen7/BoxLayout7.cs
+++ b/PKHeX.Core/Saves/Substructures/Gen7/BoxLayout7.cs
@@ -47,7 +47,7 @@ public string GetBoxName(int box)
         public void SetBoxName(int box, string value)
         {
             var data = SAV.SetString(value, strlen, strlen, 0);
-            var offset = GetBoxNameOffset(box) + (SAV6.LongStringLength * box);
+            var offset = GetBoxNameOffset(box - 1) + (SAV6.LongStringLength);
             SAV.SetData(data, offset);
         }
 
diff --git a/PKHeX.WinForms/Subforms/Save Editors/Gen6/SAV_BoxLayout.cs b/PKHeX.WinForms/Subforms/Save Editors/Gen6/SAV_BoxLayout.cs
index 03ec32d70..abf2ffbb3 100644
--- a/PKHeX.WinForms/Subforms/Save Editors/Gen6/SAV_BoxLayout.cs	
+++ b/PKHeX.WinForms/Subforms/Save Editors/Gen6/SAV_BoxLayout.cs	
@@ -28,6 +28,7 @@ public SAV_BoxLayout(SaveFile sav, int box)
             LoadUnlockedCount();
 
             LB_BoxSelect.SelectedIndex = box;
+            TB_BoxName.MaxLength = SAV.Generation >= 6 ? 14 : 8;
             editing = false;
         }