diff --git a/Trunk/TMATS_Library/MEX/types_TMATS.h b/Trunk/TMATS_Library/MEX/types_TMATS.h
index 3d338ea..5efda98 100644
--- a/Trunk/TMATS_Library/MEX/types_TMATS.h
+++ b/Trunk/TMATS_Library/MEX/types_TMATS.h
@@ -86,6 +86,7 @@ struct CompressorStruct {
     double EffDes;
     double RlineDes;
     double IDes;
+    double SMNEn;
     double CustBldEn;
     double FBldEn;
     double CustBldNm;