diff --git a/PKHeX.Core/Saves/SAV3.cs b/PKHeX.Core/Saves/SAV3.cs
index 46800d4f7..284777b58 100644
--- a/PKHeX.Core/Saves/SAV3.cs
+++ b/PKHeX.Core/Saves/SAV3.cs
@@ -99,6 +99,11 @@ public SAV3(byte[] data = null, GameVersion versionOverride = GameVersion.Any)
                 Array.Copy(Data, blockIndex * SIZE_BLOCK + ABO, Data, Box + (i - 5)*0xF80, chunkLength[i]);
             }
 
+            // Japanese games are limited to 5 character OT names; any unused characters are 0xFF.
+            // 5 for JP, 7 for INT. There's always 1 terminator, thus we can check 0x6-0x7 being 0xFFFF = INT
+            // OT name is stored at the top of the first block.
+            Japanese = BitConverter.ToInt16(data, BlockOfs[0] + 0x6) == 0;
+
             switch (Version)
             {
                 case GameVersion.RS:
@@ -173,7 +178,6 @@ public override byte[] Write(bool DSV)
         // Configuration
         public override SaveFile Clone() { return new SAV3(Write(DSV:false), Version) {Japanese = Japanese}; }
         public override bool IndeterminateGame => Version == GameVersion.Unknown;
-        public override bool IndeterminateLanguage => true; // Unknown JP/International
         public override bool IndeterminateSubVersion => Version == GameVersion.FRLG;
 
         public override int SIZE_STORED => PKX.SIZE_3STORED;
diff --git a/PKHeX.Core/Saves/SaveFile.cs b/PKHeX.Core/Saves/SaveFile.cs
index f627fc60b..c7262e209 100644
--- a/PKHeX.Core/Saves/SaveFile.cs
+++ b/PKHeX.Core/Saves/SaveFile.cs
@@ -23,7 +23,6 @@ public abstract class SaveFile
         public bool Japanese { get; set; }
         public string PlayTimeString => $"{PlayedHours}ː{PlayedMinutes:00}ː{PlayedSeconds:00}"; // not :
         public virtual bool IndeterminateGame => false;
-        public virtual bool IndeterminateLanguage => false;
         public virtual bool IndeterminateSubVersion => false;
         public abstract string Extension { get; }
         public virtual string[] PKMExtensions => PKM.Extensions.Where(f => 
diff --git a/PKHeX.Core/Saves/SaveUtil.cs b/PKHeX.Core/Saves/SaveUtil.cs
index 5820ff695..3be7d331b 100644
--- a/PKHeX.Core/Saves/SaveUtil.cs
+++ b/PKHeX.Core/Saves/SaveUtil.cs
@@ -209,14 +209,14 @@ public static GameVersion getIsG3SAV(byte[] data)
                 if (BlockOrder.Count(v => v == 0) == BlockOrder.Length)
                     continue;
                 uint GameCode = BitConverter.ToUInt32(data, Block0 * 0x1000 + 0xAC + ofs);
-                if (GameCode == uint.MaxValue)
-                    return GameVersion.Unknown; // what a hack
-
                 switch (GameCode)
                 {
                     case 0: return GameVersion.RS;
                     case 1: return GameVersion.FRLG;
-                    default: return GameVersion.E;
+                    case uint.MaxValue: return GameVersion.Unknown;  // what a hack
+                    default: return BitConverter.ToUInt32(data, Block0 * 0x1000 + 0x1F4 + ofs) == 0 
+                            ? GameVersion.RS 
+                            : GameVersion.E;
                 }
             }
             return GameVersion.Invalid;
diff --git a/PKHeX.WinForms/MainWindow/Main.cs b/PKHeX.WinForms/MainWindow/Main.cs
index e96c5a7d5..f9380e834 100644
--- a/PKHeX.WinForms/MainWindow/Main.cs
+++ b/PKHeX.WinForms/MainWindow/Main.cs
@@ -887,17 +887,6 @@ private static bool sanityCheckSAV(ref SaveFile sav, string path)
                 sav.Personal = dialog.Result == GameVersion.FR ? PersonalTable.FR : PersonalTable.LG;
             }
 
-            if (sav.IndeterminateLanguage)
-            {
-                // Japanese Save files are different. Get isJapanese
-                var drJP = WinFormsUtil.Prompt(MessageBoxButtons.YesNoCancel,
-                    $"{sav.Version} Save File detected. Select language...",
-                    "Yes: International" + Environment.NewLine + "No: Japanese");
-                if (drJP == DialogResult.Cancel)
-                    return false;
-
-                sav.Japanese = drJP == DialogResult.No;
-            }
             return true;
         }