diff --git a/src/Symfony/Component/Messenger/Transport/Doctrine/Connection.php b/src/Symfony/Component/Messenger/Transport/Doctrine/Connection.php
index 2d4b9bd673e73..d71e747598441 100644
--- a/src/Symfony/Component/Messenger/Transport/Doctrine/Connection.php
+++ b/src/Symfony/Component/Messenger/Transport/Doctrine/Connection.php
@@ -368,6 +368,7 @@ private function getSchema(): Schema
         $table->addColumn('headers', self::$useDeprecatedConstants ? Type::TEXT : Types::TEXT)
             ->setNotnull(true);
         $table->addColumn('queue_name', self::$useDeprecatedConstants ? Type::STRING : Types::STRING)
+            ->setLength(190) // MySQL 5.6 only supports 191 characters on an indexed column in utf8mb4 mode
             ->setNotnull(true);
         $table->addColumn('created_at', self::$useDeprecatedConstants ? Type::DATETIME : Types::DATETIME_MUTABLE)
             ->setNotnull(true);