diff --git a/src/ThemeInstaller.php b/src/ThemeInstaller.php
index 002d166..48b602b 100644
--- a/src/ThemeInstaller.php
+++ b/src/ThemeInstaller.php
@@ -31,13 +31,13 @@ public function getInstallPath(PackageInterface $package)
 	protected function getBaseInstallationPath()
 	{
 		if (!$this->composer || !$this->composer->getPackage()) {
-			return 'Themes';
+			return 'themes';
 		}
 
 		$extra = $this->composer->getPackage()->getExtra();
 
 		if (!$extra || empty($extra['theme-dir'])) {
-			return 'Themes';
+			return 'themes';
 		}
 
 		return $extra['theme-dir'];
diff --git a/tests/ThemeInstallerTest.php b/tests/ThemeInstallerTest.php
index 38d787d..a33f7bf 100644
--- a/tests/ThemeInstallerTest.php
+++ b/tests/ThemeInstallerTest.php
@@ -50,7 +50,7 @@ public function it_supports_vendor_not_included()
     {
         $mock = $this->getMockPackage('name');
 
-        $this->assertEquals('Themes/Name', $this->test->getInstallPath($mock));
+        $this->assertEquals('themes/Name', $this->test->getInstallPath($mock));
     }
 
     /**
@@ -59,7 +59,7 @@ public function it_supports_vendor_not_included()
     public function it_returns_themes_folder_by_default()
     {
         $mock = $this->getMockPackage('vendor/name-theme');
-        $this->assertEquals('Themes/Name', $this->test->getInstallPath($mock));
+        $this->assertEquals('themes/Name', $this->test->getInstallPath($mock));
     }
 
     /**
@@ -69,7 +69,7 @@ public function it_can_use_compound_theme_names()
     {
         $mock = $this->getMockPackage('vendor/compound-name-theme');
 
-        $this->assertEquals('Themes/CompoundName', $this->test->getInstallPath($mock));
+        $this->assertEquals('themes/CompoundName', $this->test->getInstallPath($mock));
     }
 
     /**