diff --git a/ArcFormats/Maika/ArcMK2.cs b/ArcFormats/Maika/ArcMK2.cs
index 3fc390f2..7214a5e5 100644
--- a/ArcFormats/Maika/ArcMK2.cs
+++ b/ArcFormats/Maika/ArcMK2.cs
@@ -61,9 +61,9 @@ namespace GameRes.Formats.Maika
 
         public Mk2Opener ()
         {
-            // 'MK2.0' 'BL2.0'. 'SL1.0', 'LS2.0', 'AR2.0'
+            // 'MK2.0' 'BL2.0'. 'SL1.0', 'LS2.0', 'AR2.0', 'MP2.0'
             Signatures = new uint[] {
-                0x2E324B4D, 0x2E324C42, 0x2E314C53, 0x2E32534C, 0x2E325241
+                0x2E324B4D, 0x2E324C42, 0x2E314C53, 0x2E32534C, 0x2E325241, 0x2E32504D
             };
         }