diff --git a/apps/theming/lib/Command/UpdateConfig.php b/apps/theming/lib/Command/UpdateConfig.php
index 14f8e1d5f04bd..5a6edea4b779f 100644
--- a/apps/theming/lib/Command/UpdateConfig.php
+++ b/apps/theming/lib/Command/UpdateConfig.php
@@ -86,7 +86,8 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 		}
 
 		if ($value === null) {
-			$value = $this->config->getAppValue('theming', $key, '');
+			$storageKey = in_array($key, ImageManager::SUPPORTED_IMAGE_KEYS, true) ? $key . 'Mime' : $key;
+			$value = $this->config->getAppValue('theming', $storageKey, '');
 			if ($value !== '') {
 				$output->writeln('<info>' . $key . ' is currently set to ' . $value . '</info>');
 			} else {
diff --git a/apps/theming/tests/Command/UpdateConfigTest.php b/apps/theming/tests/Command/UpdateConfigTest.php
new file mode 100644
index 0000000000000..3a15ed69e6d68
--- /dev/null
+++ b/apps/theming/tests/Command/UpdateConfigTest.php
@@ -0,0 +1,70 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Theming\Tests\Command;
+
+use OCA\Theming\Command\UpdateConfig;
+use OCA\Theming\ImageManager;
+use OCA\Theming\ThemingDefaults;
+use OCP\IConfig;
+use PHPUnit\Framework\MockObject\MockObject;
+use Symfony\Component\Console\Tester\CommandTester;
+use Test\TestCase;
+
+class UpdateConfigTest extends TestCase {
+	private ThemingDefaults&MockObject $themingDefaults;
+	private ImageManager&MockObject $imageManager;
+	private IConfig&MockObject $config;
+	private CommandTester $cmd;
+
+	#[\Override]
+	protected function setUp(): void {
+		parent::setUp();
+
+		$this->themingDefaults = $this->createMock(ThemingDefaults::class);
+		$this->imageManager = $this->createMock(ImageManager::class);
+		$this->config = $this->createMock(IConfig::class);
+
+		$command = new UpdateConfig($this->themingDefaults, $this->imageManager, $this->config);
+		$this->cmd = new CommandTester($command);
+	}
+
+	public function testReadRegularKeyThatIsSet(): void {
+		$this->config->expects($this->once())
+			->method('getAppValue')
+			->with('theming', 'name', '')
+			->willReturn('My Cloud');
+
+		$this->cmd->execute(['key' => 'name']);
+
+		$this->assertStringContainsString('name is currently set to My Cloud', $this->cmd->getDisplay());
+	}
+
+	public function testReadImageKeyThatIsSetReadsFromMimeSuffixedStorageKey(): void {
+		$this->config->expects($this->once())
+			->method('getAppValue')
+			->with('theming', 'logoMime', '')
+			->willReturn('image/png');
+
+		$this->cmd->execute(['key' => 'logo']);
+
+		$this->assertStringContainsString('logo is currently set to image/png', $this->cmd->getDisplay());
+	}
+
+	public function testReadImageKeyThatIsNotSet(): void {
+		$this->config->expects($this->once())
+			->method('getAppValue')
+			->with('theming', 'logoMime', '')
+			->willReturn('');
+
+		$this->cmd->execute(['key' => 'logo']);
+
+		$this->assertStringContainsString('logo is currently not set', $this->cmd->getDisplay());
+	}
+}