diff --git a/Filesystem.php b/Filesystem.php
index a95726fe06..ecea0f0b81 100644
--- a/Filesystem.php
+++ b/Filesystem.php
@@ -105,8 +105,8 @@ public function exists($files)
      * Sets access and modification time of file.
      *
      * @param string|array|\Traversable $files A filename, an array of files, or a \Traversable instance to create
-     * @param integer                   $time  The touch time as a unix timestamp
-     * @param integer                   $atime The access time as a unix timestamp
+     * @param integer                   $time  The touch time as a Unix timestamp
+     * @param integer                   $atime The access time as a Unix timestamp
      *
      * @throws IOException When touch fails
      */
@@ -306,7 +306,7 @@ public function symlink($originDir, $targetDir, $copyOnWindows = false)
      */
     public function makePathRelative($endPath, $startPath)
     {
-        // Normalize separators on windows
+        // Normalize separators on Windows
         if (defined('PHP_WINDOWS_VERSION_MAJOR')) {
             $endPath = strtr($endPath, '\\', '/');
             $startPath = strtr($startPath, '\\', '/');
diff --git a/Tests/FilesystemTest.php b/Tests/FilesystemTest.php
index 02969f300b..0e434c1045 100644
--- a/Tests/FilesystemTest.php
+++ b/Tests/FilesystemTest.php
@@ -906,7 +906,7 @@ public function testDumpFile()
         $this->assertFileExists($filename);
         $this->assertSame('bar', file_get_contents($filename));
 
-        // skip mode check on windows
+        // skip mode check on Windows
         if (!defined('PHP_WINDOWS_VERSION_MAJOR')) {
             $this->assertEquals(753, $this->getFilePermissions($filename));
         }
@@ -962,21 +962,21 @@ private function markAsSkippedIfSymlinkIsMissing()
         }
 
         if (defined('PHP_WINDOWS_VERSION_MAJOR') && false === self::$symlinkOnWindows) {
-            $this->markTestSkipped('symlink requires "Create symbolic links" privilege on windows');
+            $this->markTestSkipped('symlink requires "Create symbolic links" privilege on Windows');
         }
     }
 
     private function markAsSkippedIfChmodIsMissing()
     {
         if (defined('PHP_WINDOWS_VERSION_MAJOR')) {
-            $this->markTestSkipped('chmod is not supported on windows');
+            $this->markTestSkipped('chmod is not supported on Windows');
         }
     }
 
     private function markAsSkippedIfPosixIsMissing()
     {
         if (defined('PHP_WINDOWS_VERSION_MAJOR') || !function_exists('posix_isatty')) {
-            $this->markTestSkipped('Posix is not supported');
+            $this->markTestSkipped('POSIX is not supported');
         }
     }
 }