diff --git a/src/gsm0808.c b/src/gsm0808.c
index c8dc664..42a73b9 100644
--- a/src/gsm0808.c
+++ b/src/gsm0808.c
@@ -302,6 +302,8 @@
 		[GSM0808_IE_CELL_IDENTIFIER]	    = { TLV_TYPE_TLV },
 		[GSM0808_IE_CHOSEN_CHANNEL]	    = { TLV_TYPE_TV },
 		[GSM0808_IE_LAYER_3_INFORMATION]    = { TLV_TYPE_TLV },
+		[GSM0808_IE_SPEECH_VERSION]         = { TLV_TYPE_TV },
+		[GSM0808_IE_CHOSEN_ENCR_ALG]        = { TLV_TYPE_TV },
 	},
 };