diff --git a/packages/core/src/renderer/components/+namespaces/namespace-tree-view.tsx b/packages/core/src/renderer/components/+namespaces/namespace-tree-view.tsx
index 8dbc808b19..8d749abc97 100644
--- a/packages/core/src/renderer/components/+namespaces/namespace-tree-view.tsx
+++ b/packages/core/src/renderer/components/+namespaces/namespace-tree-view.tsx
@@ -129,7 +129,7 @@ function CloseSquare() {
   );
 }
 
-const StyledTreeItem = withStyles((theme) => ({
+const StyledTreeItem = withStyles(() => ({
   iconContainer: {
     "& .close": {
       opacity: 0.3,