diff --git a/src/DI/Config/Adapters/NeonAdapter.php b/src/DI/Config/Adapters/NeonAdapter.php
index 804a225a1..48a6e7590 100644
--- a/src/DI/Config/Adapters/NeonAdapter.php
+++ b/src/DI/Config/Adapters/NeonAdapter.php
@@ -43,7 +43,6 @@ public function load(string $file): array
 		$traverser = new Neon\Traverser;
 		$node = $traverser->traverse($node, $this->removeUnderscoreVisitor(...));
 		$node = $traverser->traverse($node, $this->convertAtSignVisitor(...));
-		$node = $traverser->traverse($node, $this->deprecatedParametersVisitor(...));
 		return $this->process((array) $node->toValue());
 	}
 
@@ -192,14 +191,4 @@ private function convertAtSignVisitor(Neon\Node $node)
 			trigger_error("There is no need to escape @ anymore, replace @@ with @ and put string in quotes: '$node->value' (used in $this->file)", E_USER_DEPRECATED);
 		}
 	}
-
-
-	private function deprecatedParametersVisitor(Neon\Node $node)
-	{
-		if (($node instanceof Neon\Node\StringNode || $node instanceof Neon\Node\LiteralNode)
-			&& str_contains((string) $node->value, '%parameters%')
-		) {
-			trigger_error('%parameters% is deprecated, use @container::getParameters() (in ' . $this->file . ')', E_USER_DEPRECATED);
-		}
-	}
 }
diff --git a/src/DI/Helpers.php b/src/DI/Helpers.php
index 099669147..4a82ffca1 100644
--- a/src/DI/Helpers.php
+++ b/src/DI/Helpers.php
@@ -43,12 +43,6 @@ public static function expand(mixed $var, array $params, bool|array $recursive =
 				self::expand($var->arguments, $params, $recursive),
 			);
 
-		} elseif ($var === '%parameters%' && !array_key_exists('parameters', $params)) {
-			trigger_error('%parameters% is deprecated, use @container::getParameters()', E_USER_DEPRECATED);
-			return $recursive
-				? self::expand($params, $params, $recursive)
-				: $params;
-
 		} elseif (is_string($var)) {
 			$recursive = is_array($recursive) ? $recursive : ($recursive ? [] : null);
 			return self::expandString($var, $params, $recursive);