diff --git a/test-tool/test_iscsi_datasn_invalid.c b/test-tool/test_iscsi_datasn_invalid.c
index f16d5ec..61cbae7 100644
--- a/test-tool/test_iscsi_datasn_invalid.c
+++ b/test-tool/test_iscsi_datasn_invalid.c
@@ -35,19 +35,19 @@ static int my_iscsi_queue_pdu(struct iscsi_context *iscsi _U_, struct iscsi_pdu
 	}
 	switch (change_datasn) {
 	case 1:
-		/* change datasn to 0 */
+		/* change DataSN to 0 */
 		scsi_set_uint32(&pdu->outdata.data[36], 0);
 		break;
 	case 2:
-		/* change datasn to 27 */
+		/* change DataSN to 27 */
 		scsi_set_uint32(&pdu->outdata.data[36], 27);
 		break;
 	case 3:
-		/* change datasn to -1 */
+		/* change DataSN to -1 */
 		scsi_set_uint32(&pdu->outdata.data[36], -1);
 		break;
 	case 4:
-		/* change datasn from (0,1) to (1,0) */
+		/* change DataSN from (0,1) to (1,0) */
 		datasn = scsi_get_uint32(&pdu->outdata.data[36]);
 		scsi_set_uint32(&pdu->outdata.data[36], 1 - datasn);
 		break;
@@ -63,7 +63,7 @@ void test_iscsi_datasn_invalid(void)
 	CHECK_FOR_DATALOSS;
 
 	logging(LOG_VERBOSE, LOG_BLANK_LINE);
-	logging(LOG_VERBOSE, "Test sending invalid iSCSI DATASN");
+	logging(LOG_VERBOSE, "Test sending invalid iSCSI DataSN");
 
 	if (sd->iscsi_ctx == NULL) {
 		const char *err = "[SKIPPED] This test is "
@@ -73,7 +73,7 @@ void test_iscsi_datasn_invalid(void)
 		return;
 	}
 
-	logging(LOG_VERBOSE, "Send 2 DATAIN with DATASN==0. Should fail.");
+	logging(LOG_VERBOSE, "Send two Data-Out PDU's with DataSN==0. Should fail.");
 	change_datasn = 1;
 
 	sd->iscsi_ctx->use_immediate_data = ISCSI_IMMEDIATE_DATA_NO;
@@ -96,7 +96,7 @@ void test_iscsi_datasn_invalid(void)
 	iscsi_set_noautoreconnect(sd->iscsi_ctx, 0);
 
 
-	logging(LOG_VERBOSE, "Send DATAIN with DATASN==27. Should fail");
+	logging(LOG_VERBOSE, "Send Data-Out PDU with DataSN==27. Should fail");
 	change_datasn = 2;
 
 	sd->iscsi_ctx->use_immediate_data = ISCSI_IMMEDIATE_DATA_NO;
@@ -119,7 +119,7 @@ void test_iscsi_datasn_invalid(void)
 	iscsi_set_noautoreconnect(sd->iscsi_ctx, 0);
 
 
-	logging(LOG_VERBOSE, "Send DATAIN with DATASN==-1. Should fail");
+	logging(LOG_VERBOSE, "Send Data-Out PDU with DataSN==-1. Should fail");
 	change_datasn = 3;
 
 	sd->iscsi_ctx->use_immediate_data = ISCSI_IMMEDIATE_DATA_NO;
@@ -143,7 +143,7 @@ void test_iscsi_datasn_invalid(void)
 
 
 
-	logging(LOG_VERBOSE, "Send DATAIN in reverse order (datasn == 1,0). Should fail");
+	logging(LOG_VERBOSE, "Send Data-Out PDU's in reverse order (DataSN == 1,0). Should fail");
 	change_datasn = 4;
 
 	sd->iscsi_ctx->use_immediate_data = ISCSI_IMMEDIATE_DATA_NO;