diff --git a/Legacy/StudioJikkenshitsu/ImageDAT.cs b/Legacy/StudioJikkenshitsu/ImageDAT.cs
index f5ea09ed..a14c3d8f 100644
--- a/Legacy/StudioJikkenshitsu/ImageDAT.cs
+++ b/Legacy/StudioJikkenshitsu/ImageDAT.cs
@@ -59,7 +59,7 @@ namespace GameRes.Formats.Jikkenshitsu
 
         public SpDatFormat ()
         {
-            Extensions = new string[] { "dat" };
+            Extensions = new string[] { /* "dat" */ };
             Signatures = new uint[] { 0x010003, 0x010007, 0x01000B, 0x010046, 0 };
         }