diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index 3100d03..0202f22 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -5432,7 +5432,7 @@
 						hsn := fhp.maio_hsn.hsn,
 						maio := fhp.maio_hsn.maio,
 						ma := f_pad_bit(fhp.ma_map.ma, 64, '0'B),
-						ma_bit_len := lengthof(fhp.ma_map.ma));
+						ma_bit_len := mp_transceiver_num);
 			} else {
 				tr_ts := tr_PCUIF_InfoTrxTsH0;
 			}