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-rw-r--r--epan/dissectors/packet-pgm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/epan/dissectors/packet-pgm.c b/epan/dissectors/packet-pgm.c
index 1a44dadc45..0f3f9b769c 100644
--- a/epan/dissectors/packet-pgm.c
+++ b/epan/dissectors/packet-pgm.c
@@ -1404,7 +1404,7 @@ proto_register_pgm(void)
/* subdissector code */
subdissector_table = register_dissector_table("pgm.port",
- "PGM port", FT_UINT16, BASE_DEC);
+ "PGM port", FT_UINT16, BASE_DEC, DISSECTOR_TABLE_NOT_ALLOW_DUPLICATE);
heur_subdissector_list = register_heur_dissector_list("pgm");
/*