diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 0000000000000000000000000000000000000000..01d18809f064d2350918e2d627cbaad12ef3349a
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,5 @@
+parameters:
+  ignoreErrors:
+    -
+      message: '#Cannot call method [^ ]+ on HAB\\Solr\\Facet\\Value\\Container\\FacetValueTreeNode|null.#'
+      path: src/HAB/Solr/Facet/Value/Container/FacetValueTree.php