diff --git a/conf/config.neon b/conf/config.neon
index 49e83dd82d..185502841a 100644
--- a/conf/config.neon
+++ b/conf/config.neon
@@ -42,7 +42,6 @@ services:
 	-
 		class: PHPStan\Analyser\Analyser
 		arguments:
-			analyseExcludes: %excludes_analyse%
 			ignoreErrors: %ignoreErrors%
 			bootstrapFile: %bootstrap%
 
@@ -70,6 +69,11 @@ services:
 		arguments:
 			workingDirectory: %currentWorkingDirectory%
 
+	-
+		class: PHPStan\File\FileExcluder
+		arguments:
+			analyseExcludes: %excludes_analyse%
+
 	-
 		class: PHPStan\Parser\CachedParser
 		arguments:
diff --git a/src/Analyser/Analyser.php b/src/Analyser/Analyser.php
index 7c7a414d63..76b4dce3a6 100644
--- a/src/Analyser/Analyser.php
+++ b/src/Analyser/Analyser.php
@@ -3,6 +3,7 @@
 namespace PHPStan\Analyser;
 
 use PHPStan\Broker\Broker;
+use PHPStan\File\FileExcluder;
 use PHPStan\File\FileHelper;
 use PHPStan\Parser\Parser;
 use PHPStan\Rules\Registry;
@@ -36,11 +37,9 @@ class Analyser
 	private $printer;
 
 	/**
-	 * Directories to exclude from analysing
-	 *
-	 * @var string[]
+	 * @var \PHPStan\File\FileExcluder
 	 */
-	private $analyseExcludes;
+	private $fileExcluder;
 
 	/**
 	 * @var string[]
@@ -52,7 +51,9 @@ class Analyser
 	 */
 	private $bootstrapFile;
 
-	/** @var \PHPStan\File\FileHelper */
+	/**
+	 * @var \PHPStan\File\FileHelper
+	 */
 	private $fileHelper;
 
 	/**
@@ -61,7 +62,7 @@ class Analyser
 	 * @param \PHPStan\Rules\Registry $registry
 	 * @param \PHPStan\Analyser\NodeScopeResolver $nodeScopeResolver
 	 * @param \PhpParser\PrettyPrinter\Standard $printer
-	 * @param string[] $analyseExcludes
+	 * @param \PHPStan\File\FileExcluder $fileExcluder
 	 * @param string[] $ignoreErrors
 	 * @param string|null $bootstrapFile
 	 * @param \PHPStan\File\FileHelper $fileHelper
@@ -72,7 +73,7 @@ public function __construct(
 		Registry $registry,
 		NodeScopeResolver $nodeScopeResolver,
 		\PhpParser\PrettyPrinter\Standard $printer,
-		array $analyseExcludes,
+		FileExcluder $fileExcluder,
 		array $ignoreErrors,
 		string $bootstrapFile = null,
 		FileHelper $fileHelper
@@ -83,15 +84,7 @@ public function __construct(
 		$this->registry = $registry;
 		$this->nodeScopeResolver = $nodeScopeResolver;
 		$this->printer = $printer;
-		$this->analyseExcludes = array_map(function (string $exclude) use ($fileHelper): string {
-			$normalized = $fileHelper->normalizePath($exclude);
-
-			if ($this->isFnmatchPattern($normalized)) {
-				return $normalized;
-			}
-
-			return $fileHelper->absolutizePath($normalized);
-		}, $analyseExcludes);
+		$this->fileExcluder = $fileExcluder;
 		$this->ignoreErrors = $ignoreErrors;
 		$this->bootstrapFile = $bootstrapFile;
 		$this->fileHelper = $fileHelper;
@@ -136,7 +129,7 @@ public function analyse(array $files, bool $onlyFiles, \Closure $progressCallbac
 			$file = $this->fileHelper->normalizePath($file);
 
 			try {
-				if ($this->isExcludedFromAnalysing($file)) {
+				if ($this->fileExcluder->isExcludedFromAnalysing($file)) {
 					if ($progressCallback !== null) {
 						$progressCallback($file);
 					}
@@ -217,24 +210,4 @@ private function createErrors(\PhpParser\Node $node, string $file, array $messag
 		return $errors;
 	}
 
-	public function isExcludedFromAnalysing(string $file): bool
-	{
-		foreach ($this->analyseExcludes as $exclude) {
-			if (strpos($file, $exclude) === 0) {
-				return true;
-			}
-
-			if ($this->isFnmatchPattern($exclude) && fnmatch($exclude, $file, DIRECTORY_SEPARATOR === '\\' ? FNM_NOESCAPE : 0)) {
-				return true;
-			}
-		}
-
-		return false;
-	}
-
-	private function isFnmatchPattern(string $path): bool
-	{
-		return preg_match('~[*?[\]]~', $path) > 0;
-	}
-
 }
diff --git a/src/File/FileExcluder.php b/src/File/FileExcluder.php
new file mode 100644
index 0000000000..f04b6c6dc8
--- /dev/null
+++ b/src/File/FileExcluder.php
@@ -0,0 +1,51 @@
+<?php declare(strict_types = 1);
+
+namespace PHPStan\File;
+
+class FileExcluder
+{
+
+	/**
+	 * Directories to exclude from analysing
+	 *
+	 * @var string[]
+	 */
+	private $analyseExcludes;
+
+	public function __construct(
+		FileHelper $fileHelper,
+		array $analyseExcludes
+	)
+	{
+		$this->analyseExcludes = array_map(function (string $exclude) use ($fileHelper): string {
+			$normalized = $fileHelper->normalizePath($exclude);
+
+			if ($this->isFnmatchPattern($normalized)) {
+				return $normalized;
+			}
+
+			return $fileHelper->absolutizePath($normalized);
+		}, $analyseExcludes);
+	}
+
+	public function isExcludedFromAnalysing(string $file): bool
+	{
+		foreach ($this->analyseExcludes as $exclude) {
+			if (strpos($file, $exclude) === 0) {
+				return true;
+			}
+
+			if ($this->isFnmatchPattern($exclude) && fnmatch($exclude, $file, DIRECTORY_SEPARATOR === '\\' ? FNM_NOESCAPE : 0)) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	private function isFnmatchPattern(string $path): bool
+	{
+		return preg_match('~[*?[\]]~', $path) > 0;
+	}
+
+}
diff --git a/tests/PHPStan/Analyser/AnalyserTest.php b/tests/PHPStan/Analyser/AnalyserTest.php
index 1579353438..60e2ccff54 100644
--- a/tests/PHPStan/Analyser/AnalyserTest.php
+++ b/tests/PHPStan/Analyser/AnalyserTest.php
@@ -2,6 +2,7 @@
 
 namespace PHPStan\Analyser;
 
+use PHPStan\File\FileExcluder;
 use PHPStan\File\FileHelper;
 use PHPStan\Parser\DirectParser;
 use PHPStan\Rules\AlwaysFailRule;
@@ -160,6 +161,7 @@ private function createAnalyser(
 
 		$broker = $this->createBroker();
 		$printer = new \PhpParser\PrettyPrinter\Standard();
+		$fileHelper = $this->getContainer()->getByType(FileHelper::class);
 		$analyser = new Analyser(
 			$broker,
 			new DirectParser(new \PhpParser\Parser\Php7(new \PhpParser\Lexer()), $traverser),
@@ -176,10 +178,10 @@ private function createAnalyser(
 				[]
 			),
 			$printer,
-			$analyseExcludes,
+			new FileExcluder($fileHelper, $analyseExcludes),
 			$ignoreErrors,
 			$bootstrapFile,
-			$this->getContainer()->getByType(FileHelper::class)
+			$fileHelper
 		);
 
 		return $analyser;
diff --git a/tests/PHPStan/Rules/AbstractRuleTest.php b/tests/PHPStan/Rules/AbstractRuleTest.php
index eb4ad8d566..34cafa7fb2 100644
--- a/tests/PHPStan/Rules/AbstractRuleTest.php
+++ b/tests/PHPStan/Rules/AbstractRuleTest.php
@@ -6,6 +6,7 @@
 use PHPStan\Analyser\Error;
 use PHPStan\Analyser\NodeScopeResolver;
 use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\File\FileExcluder;
 use PHPStan\File\FileHelper;
 use PHPStan\Type\FileTypeMapper;
 
@@ -31,6 +32,7 @@ private function getAnalyser(): Analyser
 
 			$broker = $this->createBroker();
 			$printer = new \PhpParser\PrettyPrinter\Standard();
+			$fileHelper = $this->getFileHelper();
 			$this->analyser = new Analyser(
 				$broker,
 				$this->getParser(),
@@ -47,10 +49,10 @@ private function getAnalyser(): Analyser
 					[]
 				),
 				$printer,
-				[],
+				new FileExcluder($fileHelper, []),
 				[],
 				null,
-				$this->getFileHelper()
+				$fileHelper
 			);
 		}