diff --git a/concepts/smiles-format.pldb b/concepts/smiles-format.pldb
index 101ffda19098..e404e1df114d 100644
--- a/concepts/smiles-format.pldb
+++ b/concepts/smiles-format.pldb
@@ -4,6 +4,7 @@ type textDataFormat
 standsFor Simplified molecular-input line-entry system
 fileExtensions smi
 country United States
+creators David Weininger
 originCommunity United States Environmental Protection Agency
 
 example