diff --git a/themes/schliesspendel/static/css/style.css b/themes/schliesspendel/static/css/style.css
index 27dbed8..fad571d 100644
--- a/themes/schliesspendel/static/css/style.css
+++ b/themes/schliesspendel/static/css/style.css
@@ -138,6 +138,6 @@ footer p {
 
 /* image header */
 .header {
-  background: linear-gradient(#FFFFFF20,#FFFFFF7E), url('/img/header.jpg') center center no-repeat;
+  background: linear-gradient(#FFFFFF20,#FFFFFF7E), url("/img/header.jpg") center center no-repeat;
   background-size: cover;
 }