diff --git a/src/v5x_protocol.c b/src/v5x_protocol.c
index 0365fe3..4080030 100644
--- a/src/v5x_protocol.c
+++ b/src/v5x_protocol.c
@@ -346,7 +346,7 @@ const struct osmo_tlv_prot_def v5x_ctrl_msg_tlv = {
 		/* variable length: PSTN */
 		[V5X_CTRL_IEI_SEQUENCE_NR]		= { 1, "SEQUENCE_NR" },
 		[V5X_CTRL_IEI_CADENCED_RINGING]		= { 1, "CADENCED_RINGING" },
-		[V5X_CTRL_IEI_PULSED_SIGNAL]		= { 2, "PULSED_SIGNAL" },
+		[V5X_CTRL_IEI_PULSED_SIGNAL]		= { 1, "PULSED_SIGNAL" },
 		[V5X_CTRL_IEI_STEADY_SIGNAL]		= { 1, "STEADY_SIGNAL" },
 		[V5X_CTRL_IEI_DIGIT_SIGNAL]		= { 1, "DIGIT_SIGNAL" },
 		[V5X_CTRL_IEI_RECOGNITION_TIME]		= { 2, "RECOGNITION_TIME" },