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-rw-r--r--epan/dissectors/packet-a21.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/epan/dissectors/packet-a21.c b/epan/dissectors/packet-a21.c
index 31acf42a96..a5ebe028bb 100644
--- a/epan/dissectors/packet-a21.c
+++ b/epan/dissectors/packet-a21.c
@@ -367,7 +367,7 @@ dissect_a21_gcsna_pdu(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, p
/* only dissect it to octetstring */
proto_tree_add_item(tree, hf_a21_gcsna_content, tvb, offset, length, ENC_NA);
if(gcsna_handle){
- new_tvb = tvb_new_subset(tvb, offset, length, length);
+ new_tvb = tvb_new_subset_length(tvb, offset, length);
/* call the dissector with the parent (top)tree */
call_dissector(gcsna_handle, new_tvb, pinfo, a21_tree->parent);
}