diff --git a/CHANGELOG.md b/CHANGELOG.md
index 79dcb4c1..aba49433 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@
 ### 🐞 Fixes
 
 - [#628](https://github.com/estruyf/vscode-front-matter/issues/628): Fix path argument and JSON data on custom scripts
+- [#633](https://github.com/estruyf/vscode-front-matter/issues/633): Fix custom taxonomy used as single value
 
 ## [9.0.0] - 2023-08-21 - [Release notes](https://beta.frontmatter.codes/updates/v9.0.0)
 
diff --git a/src/dashboardWebView/components/TaxonomyView/TaxonomyManager.tsx b/src/dashboardWebView/components/TaxonomyView/TaxonomyManager.tsx
index 4bb04241..6c459b0a 100644
--- a/src/dashboardWebView/components/TaxonomyView/TaxonomyManager.tsx
+++ b/src/dashboardWebView/components/TaxonomyView/TaxonomyManager.tsx
@@ -97,6 +97,10 @@ export const TaxonomyManager: React.FunctionComponent<ITaxonomyManagerProps> = (
         }
       }
 
+      if (typeof values === 'string') {
+        values = [values];
+      }
+
       for (const value of values) {
         if (!items.includes(value)) {
           unmapped.push(value);
@@ -111,6 +115,8 @@ export const TaxonomyManager: React.FunctionComponent<ITaxonomyManagerProps> = (
     return null;
   }
 
+  console.log('items', unmappedItems);
+
   return (
     <div className={`py-6 px-4 flex flex-col h-full overflow-hidden`}>
       <div className={`flex w-full justify-between flex-shrink-0`}>