diff --git a/src/pages/artikel/index.jsx b/src/pages/artikel/index.jsx
index 494ebe2..db2b514 100644
--- a/src/pages/artikel/index.jsx
+++ b/src/pages/artikel/index.jsx
@@ -268,9 +268,7 @@ class ArtikelUebersichtPage extends Component {
                         selected={selected}
                         onMouseDown={(e) => e.preventDefault()}
                         onClick={() => {
-                          const next = selected
-                            ? categories.filter((c) => c !== id)
-                            : [...categories, id];
+                          const next = selected ? [] : [id];
                           this.updateParams(input, buildFilter(next), 0);
                         }}
                         sx={{ pl: 2 + depth * 1.5 }}