diff --git a/build/code_sniffer/ruleset-php-legacy.xml b/build/code_sniffer/ruleset-php-legacy.xml
index fe42d25431..175a993f48 100644
--- a/build/code_sniffer/ruleset-php-legacy.xml
+++ b/build/code_sniffer/ruleset-php-legacy.xml
@@ -38,6 +38,9 @@
  <!-- Each file MUST end with exactly one newline character -->
  <rule ref="PSR2.Files.EndFileNewline" />
 
+ <!-- When referencing arrays you should not put whitespace around the opening bracket or before the closing bracket. -->
+ <rule ref="Squiz.Arrays.ArrayBracketSpacing" />
+
  <!-- In the argument list, there MUST NOT be a space before each comma,
       and there MUST be one space after each comma. -->
  <rule ref="Squiz.Functions.FunctionDeclarationArgumentSpacing">
diff --git a/phpBB/includes/acp/acp_extensions.php b/phpBB/includes/acp/acp_extensions.php
index 3d3cfb7f16..b2a6820461 100644
--- a/phpBB/includes/acp/acp_extensions.php
+++ b/phpBB/includes/acp/acp_extensions.php
@@ -527,7 +527,7 @@ class acp_extensions
 
 		$version_helper = new \phpbb\version_helper($this->cache, $this->config, $this->user);
 		$version_helper->set_current_version($meta['version']);
-		$version_helper->set_file_location($version_check ['host'], $version_check ['directory'], $version_check ['filename']);
+		$version_helper->set_file_location($version_check['host'], $version_check['directory'], $version_check['filename']);
 		$version_helper->force_stability($this->config['extension_force_unstable'] ? 'unstable' : null);
 
 		return $updates = $version_helper->get_suggested_updates($force_update, $force_cache);
diff --git a/phpBB/phpbb/db/driver/mssqlnative.php b/phpBB/phpbb/db/driver/mssqlnative.php
index 9639bfa988..a7f93c8feb 100644
--- a/phpBB/phpbb/db/driver/mssqlnative.php
+++ b/phpBB/phpbb/db/driver/mssqlnative.php
@@ -319,10 +319,10 @@ class mssqlnative extends \phpbb\db\driver\mssql_base
 			{
 				foreach ($errors as $error)
 				{
-					$error_message .= "SQLSTATE: " . $error[ 'SQLSTATE'] . "\n";
-					$error_message .= "code: " . $error[ 'code'] . "\n";
+					$error_message .= "SQLSTATE: " . $error['SQLSTATE'] . "\n";
+					$error_message .= "code: " . $error['code'] . "\n";
 					$code = $error['code'];
-					$error_message .= "message: " . $error[ 'message'] . "\n";
+					$error_message .= "message: " . $error['message'] . "\n";
 				}
 				$this->last_error_result = $error_message;
 				$error = $this->last_error_result;