diff --git a/core/css/installation.css b/core/css/installation.css
new file mode 100644
index 0000000000..a57f7c00ea
--- /dev/null
+++ b/core/css/installation.css
@@ -0,0 +1,9 @@
+/*
+ * Installation css file.
+ * This file is used on the install page only when the database
+ * isn't set, preventing scss files to be stored using the AppdataController.
+ * It should contain every style needed to correctly display the installation template.
+ *
+ */
+
+ 
\ No newline at end of file
diff --git a/lib/private/TemplateLayout.php b/lib/private/TemplateLayout.php
index 9711b0ff2f..8c8f9cfc33 100644
--- a/lib/private/TemplateLayout.php
+++ b/lib/private/TemplateLayout.php
@@ -159,8 +159,13 @@ class TemplateLayout extends \OC_Template {
 			$this->append( 'jsfiles', $web.'/'.$file . '?v=' . self::$versionHash);
 		}
 
-		// Add the css files
-		$cssFiles = self::findStylesheetFiles(\OC_Util::$styles);
+		// Add the css files and check if server is already installed to prevent
+		// appdata initialisation before database configuration
+		if(\OC::$server->getSystemConfig()->getValue('installed', false)) {
+			$cssFiles = self::findStylesheetFiles(\OC_Util::$styles);
+		} else {
+			$cssFiles = array(array(\OC::$SERVERROOT, '', 'core/css/installation.css'));
+		}
 		$this->assign('cssfiles', array());
 		$this->assign('printcssfiles', []);
 		$this->assign('versionHash', self::$versionHash);