diff --git a/references.xml b/references.xml
index 3316243..c931d15 100644
--- a/references.xml
+++ b/references.xml
@@ -3,7 +3,7 @@
 			<structureDef index="1" level="1" type="volume" friendlyName="Band {1}" />
 			<structureDef index="2" level="2" type="letter" friendlyName="Brief {2}" />
 			<structureDef index="3" level="3" type="letterSection" friendlyName="Abschnitt {3}" />
-		</structureDefs
+		</structureDefs>
       <personDefs>
 			<personDef index="-1" name="Unbekannt" />
 			<personDef index="1" name="Johann Georg Hamann" ref="https://d-nb.info/gnd/11854523X" vorname="Johann Georg" nachname="Hamann" komm="hamann" />