diff --git a/chrome/content/zotero/containers/tagSelector.jsx b/chrome/content/zotero/containers/tagSelector.jsx
index 3548fa3a21..efb0a2dd6b 100644
--- a/chrome/content/zotero/containers/tagSelector.jsx
+++ b/chrome/content/zotero/containers/tagSelector.jsx
@@ -159,7 +159,7 @@ Zotero.TagSelector = class TagSelectorContainer extends React.Component {
 			onSelect={this.state.viewOnly ? () => {} : this.handleTagSelected}
 			onTagContext={this.handleTagContext}
 			onSearch={this.handleSearch}
-			onSettings={this.handleSettings}
+			onSettings={this.handleSettings.bind(this)}
 			loaded={this.state.loaded}
 		/>;
 	}
diff --git a/chrome/content/zotero/containers/tagSelector.xul b/chrome/content/zotero/containers/tagSelector.xul
index d84e384080..f056b539fa 100644
--- a/chrome/content/zotero/containers/tagSelector.xul
+++ b/chrome/content/zotero/containers/tagSelector.xul
@@ -41,7 +41,18 @@
 		onpopupshowing="
 			document.getElementById('show-automatic').setAttribute('checked', ZoteroPane.tagSelector.showAutomatic);
 			document.getElementById('display-all-tags').setAttribute('checked', ZoteroPane.tagSelector.displayAllTags);
-			document.getElementById('num-selected').label = ZoteroPane.tagSelector.label">
+			document.getElementById('num-selected').label = ZoteroPane.tagSelector.label;
+			(async function () {
+				var libraryID = ZoteroPane.tagSelector.libraryID;
+				var library = Zotero.Libraries.get(libraryID);
+				var enabled = false;
+				if (library.editable) {
+					if ((await Zotero.Tags.getAutomaticInLibrary(libraryID)).length) {
+						enabled = true;
+					}
+				}
+				document.getElementById('delete-automatic-tags').disabled = !enabled;
+			})();">
 		<menuitem id="num-selected" disabled="true"/>
 		<menuitem id="deselect-all" label="&zotero.tagSelector.clearAll;"
 			oncommand="ZoteroPane.tagSelector.deselectAll(); event.stopPropagation();"/>