diff --git a/library/RLCMAC_EncDec.cc b/library/RLCMAC_EncDec.cc
index ac60b37..ac22def 100644
--- a/library/RLCMAC_EncDec.cc
+++ b/library/RLCMAC_EncDec.cc
@@ -505,6 +505,7 @@
 		/* LI not present: The Upper Layer PDU that starts with the current RLC data block either
 		 * fills the current RLC data block precisely or continues in the following in-sequence RLC
 		 * data block */
+		lb.hdr() = OMIT_VALUE;
 		lb.payload() = OCTETSTRING(length, ttcn_buffer.get_read_data());
 		ttcn_buffer.increase_pos(length);
 		ret_val.blocks()[0] = lb;
@@ -663,6 +664,7 @@
 		/* LI not present: The Upper Layer PDU that starts with the current RLC data block either
 		 * fills the current RLC data block precisely or continues in the following in-sequence RLC
 		 * data block */
+		lb.hdr() = OMIT_VALUE;
 		lb.payload() = OCTETSTRING(length, ttcn_buffer.get_read_data());
 		aligned_buffer.increase_pos(length);
 		ret_val.blocks()[0] = lb;
@@ -792,6 +794,7 @@
 		/* LI not present: The Upper Layer PDU that starts with the current RLC data block either
 		 * fills the current RLC data block precisely or continues in the following in-sequence RLC
 		 * data block */
+		lb.hdr() = OMIT_VALUE;
 		lb.payload() = OCTETSTRING(length, ttcn_buffer.get_read_data());
 		ttcn_buffer.increase_pos(length);
 		ret_val.blocks()[0] = lb;
@@ -945,6 +948,7 @@
 		/* LI not present: The Upper Layer PDU that starts with the current RLC data block either
 		 * fills the current RLC data block precisely or continues in the following in-sequence RLC
 		 * data block */
+		lb.hdr() = OMIT_VALUE;
 		lb.payload() = OCTETSTRING(length, aligned_buffer.get_read_data());
 		aligned_buffer.increase_pos(length);
 		ret_val.blocks()[0] = lb;