diff --git a/apps/theming/lib/ThemingDefaults.php b/apps/theming/lib/ThemingDefaults.php
index 319474a855..85ad11943d 100644
--- a/apps/theming/lib/ThemingDefaults.php
+++ b/apps/theming/lib/ThemingDefaults.php
@@ -144,10 +144,10 @@ class ThemingDefaults extends \OC_Defaults {
 		$cacheBusterCounter = $this->config->getAppValue('theming', 'cachebuster', '0');
 
 		if(!$logo || !$logoExists) {
-			return $this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('core','logo.svg') . '?v=' . $cacheBusterCounter);
+			return $this->urlGenerator->imagePath('core','logo.svg') . '?v=' . $cacheBusterCounter;
 		}
 
-		return $this->urlGenerator->linkToRouteAbsolute('theming.Theming.getLogo') . '?v=' . $cacheBusterCounter;
+		return $this->urlGenerator->linkToRoute('theming.Theming.getLogo') . '?v=' . $cacheBusterCounter;
 	}
 
 	/**
@@ -169,7 +169,7 @@ class ThemingDefaults extends \OC_Defaults {
 			return $this->urlGenerator->imagePath('core','background.jpg');
 		}
 
-		return $this->urlGenerator->linkToRouteAbsolute('theming.Theming.getLoginBackground');
+		return $this->urlGenerator->linkToRoute('theming.Theming.getLoginBackground');
 	}
 
 
@@ -186,8 +186,8 @@ class ThemingDefaults extends \OC_Defaults {
 			'theming-cachebuster' => "'" . $this->config->getAppValue('theming', 'cachebuster', '0') . "'",
 		];
 
-		$variables['image-logo'] = "'".$this->getLogo()."'";
-		$variables['image-login-background'] = "'".$this->getBackground()."'";
+		$variables['image-logo'] = "'".$this->urlGenerator->getAbsoluteURL($this->getLogo())."'";
+		$variables['image-login-background'] = "'".$this->urlGenerator->getAbsoluteURL($this->getBackground())."'";
 
 		if ($this->config->getAppValue('theming', 'color', null) !== null) {
 			if ($this->util->invertTextColor($this->getColorPrimary())) {
diff --git a/apps/theming/tests/ThemingDefaultsTest.php b/apps/theming/tests/ThemingDefaultsTest.php
index 2fda63d4fe..0334f5ba69 100644
--- a/apps/theming/tests/ThemingDefaultsTest.php
+++ b/apps/theming/tests/ThemingDefaultsTest.php
@@ -432,8 +432,7 @@ class ThemingDefaultsTest extends TestCase {
 			->method('getAppValue')
 			->with('theming', 'backgroundMime', false)
 			->willReturn('image/svg+xml');
-		$expected = $this->urlGenerator->linkToRouteAbsolute('theming.Theming.getLoginBackground');
-		$this->assertEquals($expected, $this->template->getBackground());
+		$this->assertEquals('/index.php/apps/theming/loginbackground', $this->template->getBackground());
 	}
 
 	public function testGetLogoDefault() {
@@ -455,8 +454,7 @@ class ThemingDefaultsTest extends TestCase {
 			->method('getFolder')
 			->with('images')
 			->willThrowException(new \Exception());
-		$expected = $this->urlGenerator->getAbsoluteURL('/core/img/logo.svg') . '?v=0';
-		$this->assertEquals($expected, $this->template->getLogo());
+		$this->assertEquals('/core/img/logo.svg?v=0', $this->template->getLogo());
 	}
 
 	public function testGetLogoCustom() {
@@ -478,8 +476,7 @@ class ThemingDefaultsTest extends TestCase {
 			->method('getAppValue')
 			->with('theming', 'cachebuster', '0')
 			->willReturn('0');
-		$expected = $this->urlGenerator->getAbsoluteURL('index.php/apps/theming/logo') . '?v=0';
-		$this->assertEquals($expected, $this->template->getLogo());
+		$this->assertEquals('/index.php/apps/theming/logo?v=0', $this->template->getLogo());
 	}
 
 	public function testGetScssVariablesCached() {