diff --git a/src/Deployment/CliRunner.php b/src/Deployment/CliRunner.php
index 84ebe61..7faf684 100644
--- a/src/Deployment/CliRunner.php
+++ b/src/Deployment/CliRunner.php
@@ -232,7 +232,7 @@ private function loadConfig(): ?array
 
 				XX,
 			[
-				'config' => [CommandLine::REALPATH => true],
+				'config' => [CommandLine::RealPath => true],
 			],
 		);
 
diff --git a/src/Deployment/CommandLine.php b/src/Deployment/CommandLine.php
index ceefad4..ea5bf37 100644
--- a/src/Deployment/CommandLine.php
+++ b/src/Deployment/CommandLine.php
@@ -17,11 +17,11 @@
 class CommandLine
 {
 	public const
-		ARGUMENT = 'argument',
-		OPTIONAL = 'optional',
-		REPEATABLE = 'repeatable',
-		REALPATH = 'realpath',
-		VALUE = 'default';
+		Argument = 'argument',
+		Optional = 'optional',
+		Repeatable = 'repeatable',
+		RealPath = 'realpath',
+		Value = 'default';
 
 	/** @var array[] */
 	private array $options = [];
@@ -49,10 +49,10 @@ public function __construct(string $help, array $defaults = [])
 			$name = end($m[1]);
 			$opts = $this->options[$name] ?? [];
 			$this->options[$name] = $opts + [
-				self::ARGUMENT => (bool) end($m[2]),
-				self::OPTIONAL => isset($line[2]) || (substr(end($m[2]), 0, 1) === '[') || isset($opts[self::VALUE]),
-				self::REPEATABLE => (bool) end($m[3]),
-				self::VALUE => $line[2] ?? null,
+				self::Argument => (bool) end($m[2]),
+				self::Optional => isset($line[2]) || (substr(end($m[2]), 0, 1) === '[') || isset($opts[self::Value]),
+				self::Repeatable => (bool) end($m[3]),
+				self::Value => $line[2] ?? null,
 			];
 			if ($name !== $m[1][0]) {
 				$this->aliases[$m[1][0]] = $name;
@@ -83,7 +83,7 @@ public function parse(array $args = null): array
 				}
 				$name = current($this->positional);
 				$this->checkArg($this->options[$name], $arg);
-				if (empty($this->options[$name][self::REPEATABLE])) {
+				if (empty($this->options[$name][self::Repeatable])) {
 					$params[$name] = $arg;
 					next($this->positional);
 				} else {
@@ -103,19 +103,19 @@ public function parse(array $args = null): array
 
 			$opt = $this->options[$name];
 
-			if ($arg !== true && empty($opt[self::ARGUMENT])) {
+			if ($arg !== true && empty($opt[self::Argument])) {
 				throw new \Exception("Option $name has not argument.");
 
-			} elseif ($arg === true && !empty($opt[self::ARGUMENT])) {
+			} elseif ($arg === true && !empty($opt[self::Argument])) {
 				if (isset($args[$i]) && $args[$i][0] !== '-') {
 					$arg = $args[$i++];
-				} elseif (empty($opt[self::OPTIONAL])) {
+				} elseif (empty($opt[self::Optional])) {
 					throw new \Exception("Option $name requires argument.");
 				}
 			}
 			$this->checkArg($opt, $arg);
 
-			if (empty($opt[self::REPEATABLE])) {
+			if (empty($opt[self::Repeatable])) {
 				$params[$name] = $arg;
 			} else {
 				$params[$name][] = $arg;
@@ -125,14 +125,14 @@ public function parse(array $args = null): array
 		foreach ($this->options as $name => $opt) {
 			if (isset($params[$name])) {
 				continue;
-			} elseif (isset($opt[self::VALUE])) {
-				$params[$name] = $opt[self::VALUE];
-			} elseif ($name[0] !== '-' && empty($opt[self::OPTIONAL])) {
+			} elseif (isset($opt[self::Value])) {
+				$params[$name] = $opt[self::Value];
+			} elseif ($name[0] !== '-' && empty($opt[self::Optional])) {
 				throw new \Exception("Missing required argument <$name>.");
 			} else {
 				$params[$name] = null;
 			}
-			if (!empty($opt[self::REPEATABLE])) {
+			if (!empty($opt[self::Repeatable])) {
 				$params[$name] = (array) $params[$name];
 			}
 		}
@@ -148,7 +148,7 @@ public function help(): void
 
 	public function checkArg(array $opt, &$arg): void
 	{
-		if (!empty($opt[self::REALPATH])) {
+		if (!empty($opt[self::RealPath])) {
 			$path = realpath($arg);
 			if ($path === false) {
 				throw new \Exception("File path '$arg' not found.");
diff --git a/src/Deployment/Deployer.php b/src/Deployment/Deployer.php
index ba1aaa9..117c0b3 100644
--- a/src/Deployment/Deployer.php
+++ b/src/Deployment/Deployer.php
@@ -16,7 +16,7 @@
  */
 class Deployer
 {
-	private const TEMPORARY_SUFFIX = '.deploytmp';
+	private const TemporarySuffix = '.deploytmp';
 
 	public string $deploymentFile = '.htdeployment';
 
@@ -266,7 +266,7 @@ private function uploadPaths(array $paths, array &$tempFiles): void
 				continue;
 			}
 
-			$tempFiles[$path . self::TEMPORARY_SUFFIX] = true;
+			$tempFiles[$path . self::TemporarySuffix] = true;
 			$localFile = $this->preprocess($path);
 			if ($localFile !== $this->localDir . $path) {
 				$path .= ' (filters applied)';
@@ -274,7 +274,7 @@ private function uploadPaths(array $paths, array &$tempFiles): void
 
 			$this->server->writeFile(
 				$localFile,
-				$remotePath . self::TEMPORARY_SUFFIX,
+				$remotePath . self::TemporarySuffix,
 				function ($percent) use ($num, $paths, $path) {
 					$this->writeProgress($num + 1, count($paths), $path, $percent, 'green');
 				},
@@ -294,8 +294,8 @@ private function renamePaths(array $paths, array &$tempFiles): void
 		foreach ($files as $num => $file) {
 			$this->writeProgress($num + 1, count($files), "Renaming $file", null, 'olive');
 			$remoteFile = $this->remoteDir . $file;
-			$this->server->renameFile($remoteFile . self::TEMPORARY_SUFFIX, $remoteFile);
-			unset($tempFiles[$file . self::TEMPORARY_SUFFIX]);
+			$this->server->renameFile($remoteFile . self::TemporarySuffix, $remoteFile);
+			unset($tempFiles[$file . self::TemporarySuffix]);
 		}
 	}
 
diff --git a/src/Deployment/FtpServer.php b/src/Deployment/FtpServer.php
index e0ee07b..d60aa88 100644
--- a/src/Deployment/FtpServer.php
+++ b/src/Deployment/FtpServer.php
@@ -16,8 +16,8 @@
  */
 class FtpServer implements Server
 {
-	private const RETRIES = 10;
-	private const BLOCK_SIZE = 400000;
+	private const Retries = 10;
+	private const BlockSize = 400000;
 
 	public ?int $filePermissions = null;
 	public ?int $dirPermissions = null;
@@ -101,7 +101,7 @@ public function writeFile(string $local, string $remote, callable $progress = nu
 		$blocks = 0;
 		do {
 			if ($progress) {
-				$progress(min($blocks * self::BLOCK_SIZE / $size, 100));
+				$progress(min($blocks * self::BlockSize / $size, 100));
 			}
 			$ret = $blocks === 0
 				? Safe::ftp_nb_put($this->connection, $remote, $local, FTP_BINARY)
diff --git a/src/Deployment/RetryServer.php b/src/Deployment/RetryServer.php
index f11029b..a90c5d8 100644
--- a/src/Deployment/RetryServer.php
+++ b/src/Deployment/RetryServer.php
@@ -16,8 +16,8 @@
  */
 class RetryServer implements Server
 {
-	private const RETRIES = 20;
-	private const DELAY = 2;
+	private const Retries = 20;
+	private const Delay = 2;
 
 	private Server $server;
 	private Logger $logger;
@@ -115,7 +115,7 @@ private function retry(string $method, array $args)
 			return $this->server->$method(...$args);
 
 		} catch (ServerException $e) {
-			if ($counter < self::RETRIES) {
+			if ($counter < self::Retries) {
 				if ($e->getMessage() !== $lastError) {
 					$lastError = $e->getMessage();
 					$this->logger->log("Error: $e", 'red');
@@ -128,7 +128,7 @@ private function retry(string $method, array $args)
 				$counter++;
 				$this->logger->progress('retrying ' . str_pad(str_repeat('.', $counter % 40), 40));
 
-				sleep(self::DELAY);
+				sleep(self::Delay);
 				goto retry;
 			}
 			throw $e;