diff --git a/index.xml b/index.xml
index b848c68..d17fba6 100644
--- a/index.xml
+++ b/index.xml
@@ -898,10 +898,9 @@
       <pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate>
       
       <guid>https://www.eclipse.org/elk/reference/options/org-eclipse-elk-edgelabels-placement.html</guid>
-      <description>Property Value     Identifier: org.eclipse.elk.edgeLabels.placement   Meta Data Provider: core.options.CoreOptions   Value Type: org.eclipse.elk.core.options.EdgeLabelPlacement (Enum)   Possible Values: UNDEFINED
-CENTER
+      <description>Property Value     Identifier: org.eclipse.elk.edgeLabels.placement   Meta Data Provider: core.options.CoreOptions   Value Type: org.eclipse.elk.core.options.EdgeLabelPlacement (Enum)   Possible Values: CENTER
 HEAD
-TAIL   Default Value: EdgeLabelPlacement.UNDEFINED (as defined in org.eclipse.elk)   Applies To: labels   Containing Group: edgeLabels    Description Gives a hint on where to put edge labels.</description>
+TAIL   Default Value: EdgeLabelPlacement.CENTER (as defined in org.eclipse.elk)   Applies To: labels   Containing Group: edgeLabels    Description Gives a hint on where to put edge labels.</description>
     </item>
     
     <item>
diff --git a/reference/algorithms/org-eclipse-elk-layered.html b/reference/algorithms/org-eclipse-elk-layered.html
index 9db7577..9914a4e 100644
--- a/reference/algorithms/org-eclipse-elk-layered.html
+++ b/reference/algorithms/org-eclipse-elk-layered.html
@@ -314,7 +314,7 @@
 
 <tr>
 <td><a href="../../reference/options/org-eclipse-elk-edgelabels-placement.html">Edge Label Placement</a></td>
-<td><code>EdgeLabelPlacement.UNDEFINED</code></td>
+<td><code>EdgeLabelPlacement.CENTER</code></td>
 </tr>
 
 <tr>
diff --git a/reference/index.xml b/reference/index.xml
index 421093c..899f56c 100644
--- a/reference/index.xml
+++ b/reference/index.xml
@@ -621,10 +621,9 @@
       <pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate>
       
       <guid>https://www.eclipse.org/elk/reference/options/org-eclipse-elk-edgelabels-placement.html</guid>
-      <description>Property Value     Identifier: org.eclipse.elk.edgeLabels.placement   Meta Data Provider: core.options.CoreOptions   Value Type: org.eclipse.elk.core.options.EdgeLabelPlacement (Enum)   Possible Values: UNDEFINED
-CENTER
+      <description>Property Value     Identifier: org.eclipse.elk.edgeLabels.placement   Meta Data Provider: core.options.CoreOptions   Value Type: org.eclipse.elk.core.options.EdgeLabelPlacement (Enum)   Possible Values: CENTER
 HEAD
-TAIL   Default Value: EdgeLabelPlacement.UNDEFINED (as defined in org.eclipse.elk)   Applies To: labels   Containing Group: edgeLabels    Description Gives a hint on where to put edge labels.</description>
+TAIL   Default Value: EdgeLabelPlacement.CENTER (as defined in org.eclipse.elk)   Applies To: labels   Containing Group: edgeLabels    Description Gives a hint on where to put edge labels.</description>
     </item>
     
     <item>
diff --git a/reference/options/org-eclipse-elk-edgelabels-placement.html b/reference/options/org-eclipse-elk-edgelabels-placement.html
index 2777968..dc7423a 100644
--- a/reference/options/org-eclipse-elk-edgelabels-placement.html
+++ b/reference/options/org-eclipse-elk-edgelabels-placement.html
@@ -101,12 +101,12 @@
 
 <tr>
 <td><em>Possible Values:</em></td>
-<td><code>UNDEFINED</code><br><code>CENTER</code><br><code>HEAD</code><br><code>TAIL</code></td>
+<td><code>CENTER</code><br><code>HEAD</code><br><code>TAIL</code></td>
 </tr>
 
 <tr>
 <td><em>Default Value:</em></td>
-<td><code>EdgeLabelPlacement.UNDEFINED</code> (as defined in <code>org.eclipse.elk</code>)</td>
+<td><code>EdgeLabelPlacement.CENTER</code> (as defined in <code>org.eclipse.elk</code>)</td>
 </tr>
 
 <tr>