diff --git a/include/osmocom/bsc/pcuif_proto.h b/include/osmocom/bsc/pcuif_proto.h
index bf05b01c9..693a1d537 100644
--- a/include/osmocom/bsc/pcuif_proto.h
+++ b/include/osmocom/bsc/pcuif_proto.h
@@ -39,7 +39,7 @@
 #define PCU_IF_SAPI_PDTCH	0x05	/* packet data/control/ccch block */
 #define PCU_IF_SAPI_PRACH	0x06	/* packet random access channel */
 #define PCU_IF_SAPI_PTCCH	0x07	/* packet TA control channel */
-#define PCU_IF_SAPI_AGCH_DT	0x08	/* assignment on AGCH but with additional TLLI */
+#define PCU_IF_SAPI_PCH_DT	0x08	/* assignment on PCH (confirmed using TLLI) */
 
 /* flags */
 #define PCU_IF_FLAG_ACTIVE	(1 << 0)/* BTS is active */
diff --git a/src/osmo-bsc/pcu_sock.c b/src/osmo-bsc/pcu_sock.c
index df8461592..307a70e3c 100644
--- a/src/osmo-bsc/pcu_sock.c
+++ b/src/osmo-bsc/pcu_sock.c
@@ -55,7 +55,7 @@ static const char *sapi_string[] = {
 	[PCU_IF_SAPI_PDTCH] =	"PDTCH",
 	[PCU_IF_SAPI_PRACH] =	"PRACH",
 	[PCU_IF_SAPI_PTCCH] = 	"PTCCH",
-	[PCU_IF_SAPI_AGCH_DT] = 	"AGCH_DT",
+	[PCU_IF_SAPI_PCH_DT] =	"PCH_DT",
 };
 
 /* Check if BTS has a PCU connection */
@@ -443,7 +443,7 @@ static int pcu_rx_data_req(struct gsm_bts *bts, uint8_t msg_type,
 			rc = -EIO;
 		}
 		break;
-	case PCU_IF_SAPI_AGCH_DT:
+	case PCU_IF_SAPI_PCH_DT:
 		/* DT = direct tlli. A tlli is prefixed */
 
 		if (data_req->len < 5) {