diff --git a/include/grgsm/decoding/tch_f_decoder.h b/include/grgsm/decoding/tch_f_decoder.h
index df5f0ff..ae65f06 100644
--- a/include/grgsm/decoding/tch_f_decoder.h
+++ b/include/grgsm/decoding/tch_f_decoder.h
@@ -41,7 +41,8 @@
         TCH_AFS5_15,
         TCH_AFS4_75,
         TCH_FS,
-        TCH_EFR
+        TCH_EFR,
+        TCH_HS,
     };
 
     /*!