diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index c36748cd5e..b63e31e6fb 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -30,9 +30,9 @@ parameters:
     -
       message: "#^Call to static method dayOfWeek\\(\\) on an unknown class Date_Calc\\.#"
       path: data/module/Calendar/Util/Textual.php
-    # -
-    #   message: "#^Constant SMARTY_PLUGINS_DIR not found\\.$#"
-    #   path: data/smarty_extends/*
+    -
+      message: "#^Constant SMARTY_PLUGINS_DIR not found\\.$#"
+      path: data/smarty_extends/*
     -
       message: "#^Function smarty_function_escape_special_chars not found\\.$#"
       path: data/smarty_extends/*