diff --git a/library/BSSMAP_Templates.ttcn b/library/BSSMAP_Templates.ttcn
index b7230cd..02c84e2 100644
--- a/library/BSSMAP_Templates.ttcn
+++ b/library/BSSMAP_Templates.ttcn
@@ -1174,6 +1174,19 @@
 	}
 }
 
+template PDU_BSSAP ts_BSSMAP_CipherModeComplAlg(template BSSMAP_IE_ChosenEncryptionAlgorithm chosenEncryptionAlgorithm := ?)
+modifies ts_BSSAP_BSSMAP := {
+	pdu := {
+		bssmap := {
+			cipherModeComplete := {
+				messageType := '55'O,
+				layer3MessageContents := omit,
+				chosenEncryptionAlgorithm := chosenEncryptionAlgorithm
+			}
+		}
+	}
+}
+
 template PDU_BSSAP tr_BSSMAP_CipherModeCompl(template OCT1 alg := ?) modifies tr_BSSAP_BSSMAP := {
 	pdu := {
 		bssmap := {