diff --git a/packages/open-scd/src/translations/de.ts b/packages/open-scd/src/translations/de.ts
index b1664c9f0..544d9c2d5 100644
--- a/packages/open-scd/src/translations/de.ts
+++ b/packages/open-scd/src/translations/de.ts
@@ -181,7 +181,7 @@ export const de: Translations = {
       'DataTypeTemplates können nicht validiert werden. Das Projekt muss die Version 2007B3 oder höher haben.',
   },
   plugins: {
-    heading: 'Erweiterungen',
+    heading: 'Plug-ins',
     editor: 'Editor',
     menu: 'Menüeintrag',
     requireDoc: 'Benötigt Dokument',
@@ -190,13 +190,13 @@ export const de: Translations = {
     bottom: 'unten',
     validator: 'Validator',
     add: {
-      heading: 'Benutzerdefinierte Erweiterung',
-      warning: `Hier können Sie benutzerdefinierte Erweiterungen hinzufügen.
+      heading: 'Benutzerdefinierte plug-in',
+      warning: `Hier können Sie benutzerdefinierte plug-ins hinzufügen.
                 OpenSCD übernimmt hierfür keine Gewähr.`,
       name: 'Name',
-      nameHelper: 'Lokaler Name der Erweiterung (frei wählbar)',
+      nameHelper: 'Lokaler Name der plug-in (frei wählbar)',
       src: 'URL',
-      srcHelper: 'Die Erweiterungs-URL des Herstellers',
+      srcHelper: 'Die plug-in-URL des Herstellers',
     },
   },
   substation: {
diff --git a/packages/open-scd/src/translations/en.ts b/packages/open-scd/src/translations/en.ts
index c312d48cf..5a7c2867b 100644
--- a/packages/open-scd/src/translations/en.ts
+++ b/packages/open-scd/src/translations/en.ts
@@ -158,7 +158,7 @@ export const en = {
       'Cannot validate DataTypeTemplates. The version of the project must be higher than or equal to 2007B3',
   },
   plugins: {
-    heading: 'Extensions',
+    heading: 'Plug-ins',
     editor: 'Editor tab',
     menu: 'Menu entry',
     requireDoc: 'Requires loaded document',
@@ -167,13 +167,13 @@ export const en = {
     bottom: 'bottom',
     validator: 'Validator',
     add: {
-      heading: 'Add custom extension',
-      warning: `Here you may add remote extensions directly from a custom URL.
+      heading: 'Add custom plug-in',
+      warning: `Here you may add remote plug-ins directly from a custom URL.
                 You do this at your own risk.`,
       name: 'Name',
-      nameHelper: 'Your preferred extension name',
+      nameHelper: 'Your preferred plug-in name',
       src: 'URL',
-      srcHelper: 'The vendor supplied extension URL',
+      srcHelper: 'The vendor supplied plug-in URL',
     },
   },
   validator: {
diff --git a/packages/open-scd/test/integration/__snapshots__/open-scd.test.snap.js b/packages/open-scd/test/integration/__snapshots__/open-scd.test.snap.js
index 8c7ac41ba..1cba72b88 100644
--- a/packages/open-scd/test/integration/__snapshots__/open-scd.test.snap.js
+++ b/packages/open-scd/test/integration/__snapshots__/open-scd.test.snap.js
@@ -287,7 +287,7 @@ snapshots["open-scd looks like its snapshot"] =
                   extension
                 </mwc-icon>
                 <span>
-                  Extensions
+                  Plug-ins
                 </span>
               </mwc-list-item>
             </mwc-list>
@@ -356,7 +356,7 @@ snapshots["open-scd looks like its snapshot"] =
             </mwc-icon-button>
           </div>
           <mwc-dialog
-            heading="Extensions"
+            heading="Plug-ins"
             id="pluginManager"
             stacked=""
           >
@@ -911,7 +911,7 @@ snapshots["open-scd looks like its snapshot"] =
             </mwc-button>
             <mwc-button
               icon="library_add"
-              label="Add custom extension…"
+              label="Add custom plug-in…"
               outlined=""
               slot="primaryAction"
               trailingicon=""
@@ -919,16 +919,16 @@ snapshots["open-scd looks like its snapshot"] =
             </mwc-button>
           </mwc-dialog>
           <mwc-dialog
-            heading="Add custom extension"
+            heading="Add custom plug-in"
             id="pluginAdd"
           >
             <div style="display: flex; flex-direction: column; row-gap: 8px;">
               <p style="color:var(--mdc-theme-error);">
-                Here you may add remote extensions directly from a custom URL.
+                Here you may add remote plug-ins directly from a custom URL.
                 You do this at your own risk.
               </p>
               <mwc-textfield
-                helper="Your preferred extension name"
+                helper="Your preferred plug-in name"
                 id="pluginNameInput"
                 label="Name"
                 required=""
@@ -1031,7 +1031,7 @@ snapshots["open-scd looks like its snapshot"] =
                 </mwc-radio-list-item>
               </mwc-list>
               <mwc-textfield
-                helper="The vendor supplied extension URL"
+                helper="The vendor supplied plug-in URL"
                 id="pluginSrcInput"
                 label="URL"
                 placeholder="http://example.com/plugin.js"