diff --git a/libraries/loader.php b/libraries/loader.php
index 0ada1898cd18e..5adca189bf340 100644
--- a/libraries/loader.php
+++ b/libraries/loader.php
@@ -297,9 +297,9 @@ class_alias($original, $class);
 	public static function register($class, $path, $force = true)
 	{
 		// When an alias exists, register it as well
-		if (key_exists($class, self::$classAliases))
+		if (key_exists(strtolower($class), self::$classAliases))
 		{
-			self::register(self::stripFirstBackslash(self::$classAliases[$class]), $path, $force);
+			self::register(self::stripFirstBackslash(self::$classAliases[strtolower($class)]), $path, $force);
 		}
 
 		// Sanitize class name.
@@ -377,6 +377,9 @@ public static function registerPrefix($prefix, $path, $reset = false, $prepend =
 	 */
 	public static function registerAlias($alias, $original, $version = false)
 	{
+		// PHP is case insensitive so support all kind of alias combination
+		$alias = strtolower($alias);
+
 		if (!isset(self::$classAliases[$alias]))
 		{
 			self::$classAliases[$alias] = $original;
@@ -631,7 +634,7 @@ public static function loadByPsr0($class)
 	 */
 	public static function loadByAlias($class)
 	{
-		$class = self::stripFirstBackslash($class);
+		$class = strtolower(self::stripFirstBackslash($class));
 
 		if (isset(self::$classAliases[$class]))
 		{
diff --git a/tests/unit/suites/libraries/joomla/JLoaderTest.php b/tests/unit/suites/libraries/joomla/JLoaderTest.php
index 0e814941ff90e..886c62008a43e 100644
--- a/tests/unit/suites/libraries/joomla/JLoaderTest.php
+++ b/tests/unit/suites/libraries/joomla/JLoaderTest.php
@@ -301,6 +301,24 @@ public function testAliasInstanceOf()
 		);
 	}
 
+	/**
+	 * Tests the JLoader::registerAlias method if the alias works ignoring cases
+	 *
+	 * @return  void
+	 *
+	 * @since   3.8.0
+	 */
+	public function testAliasIgnoreCase()
+	{
+		// Normally register the class
+		JLoader::register('JLoaderAliasStub', JPATH_TEST_STUBS . '/loaderoveralias/jloaderaliasstub.php');
+
+		// Register the alias
+		JLoader::registerAlias('CASEinsensitiveALIAS', 'JLoaderAliasStub');
+
+		$this->assertTrue(class_exists('caseINSENSITIVEalias'));
+	}
+
 	/**
 	 * Tests the JLoader::load method.
 	 *