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-rw-r--r--src/tools/vppapigen/vppapigen_json.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/tools/vppapigen/vppapigen_json.py b/src/tools/vppapigen/vppapigen_json.py
index ba32e284d81..0a1a3d37373 100644
--- a/src/tools/vppapigen/vppapigen_json.py
+++ b/src/tools/vppapigen/vppapigen_json.py
@@ -77,7 +77,8 @@ def walk_defs(s, is_message=False):
c = {}
c["crc"] = "{0:#0{1}x}".format(t.crc, 10)
c["options"] = t.options
- c["comment"] = t.comment
+ if t.comment:
+ c["comment"] = t.comment
d.append(c)
r.append(d)