diff --git a/fuzzers/005-tilegrid/add_tdb.py b/fuzzers/005-tilegrid/add_tdb.py
index f351251c..cd49a446 100644
--- a/fuzzers/005-tilegrid/add_tdb.py
+++ b/fuzzers/005-tilegrid/add_tdb.py
@@ -125,6 +125,7 @@ def run(fn_in, fn_out, verbose=False):
         ("monitor_int", int_frames, int_words),
         ("orphan_int_column", int_frames, int_words),
         ("gtp_int_interface", int_frames, int_words),
+        ("gtx_int_interface", int_frames, int_words),
         ("pcie_int_interface", int_frames, int_words),
     ]