diff --git a/lib/private/Template/SCSSCacher.php b/lib/private/Template/SCSSCacher.php
index a552122b35801..19eb06acf0f16 100644
--- a/lib/private/Template/SCSSCacher.php
+++ b/lib/private/Template/SCSSCacher.php
@@ -272,6 +272,13 @@ private function isCached(string $fileNameCSS, string $app) {
 	private function variablesChanged(): bool {
 		$cachedVariables = $this->config->getAppValue('core', 'theming.variables', '');
 		$injectedVariables = $this->getInjectedVariables($cachedVariables);
+
+		if (empty($injectedVariables)) {
+			// There might be cases where the no variables could be fetched
+			// Stay with the old ones in that case ot avoid cache reset that is not needed
+			return false;
+		}
+
 		if ($cachedVariables !== md5($injectedVariables)) {
 			$this->logger->debug('SCSSCacher::variablesChanged storedVariables: ' . json_encode($this->config->getAppValue('core', 'theming.variables')) . ' currentInjectedVariables: ' . json_encode($injectedVariables), ['app' => 'scss_cacher']);
 			$this->config->setAppValue('core', 'theming.variables', md5($injectedVariables));
diff --git a/tests/lib/Template/SCSSCacherTest.php b/tests/lib/Template/SCSSCacherTest.php
index f7b7b3bb6d356..4e94de0e8b28c 100644
--- a/tests/lib/Template/SCSSCacherTest.php
+++ b/tests/lib/Template/SCSSCacherTest.php
@@ -101,7 +101,7 @@ protected function setUp(): void {
 			);
 
 		$this->themingDefaults = $this->createMock(ThemingDefaults::class);
-		$this->themingDefaults->expects($this->any())->method('getScssVariables')->willReturn([]);
+		$this->themingDefaults->expects($this->any())->method('getScssVariables')->willReturn(['color-primary' => '#745bca']);
 
 		$iconsFile = $this->createMock(ISimpleFile::class);
 		$this->iconsCacher->expects($this->any())