diff --git a/src/Psysh/DrushHelpCommand.php b/src/Psysh/DrushHelpCommand.php
index 8510daff02..2dc93af1ee 100644
--- a/src/Psysh/DrushHelpCommand.php
+++ b/src/Psysh/DrushHelpCommand.php
@@ -108,7 +108,7 @@ protected function execute(InputInterface $input, OutputInterface $output): void
                     $namespaces[$namespace] = [];
                 }
 
-                $namespaces[$namespace][] = sprintf("    <info>%-${width}s</info> %s%s", $name, $command->getDescription(), $aliases);
+                $namespaces[$namespace][] = sprintf("    <info>%-{$width}s</info> %s%s", $name, $command->getDescription(), $aliases);
             }
 
             $messages = [];