diff --git a/library/RLCMAC_Types.ttcn b/library/RLCMAC_Types.ttcn
index 97b89da8f..8688d3650 100644
--- a/library/RLCMAC_Types.ttcn
+++ b/library/RLCMAC_Types.ttcn
@@ -576,8 +576,10 @@ uint3_t usf) := {
 		payload := data
 	}
 
-	/* PTCCH/D (Packet Timing Advance Control Channel) message.
-	 * TODO: add a spec. reference to the message format definition. */
+/************************
+ * PTCCH/D (Packet Timing Advance Control Channel) message.
+ * TODO: add a spec. reference to the message format definition.
+ *************************/
 	type record PTCCHTimingAdvanceIE {
 		BIT1			spare ('0'B),
 		uint7_t			ta_val