diff --git a/apps/theming/css/theming.scss b/apps/theming/css/theming.scss
index 2d0afa2d29..6057a15f42 100644
--- a/apps/theming/css/theming.scss
+++ b/apps/theming/css/theming.scss
@@ -44,7 +44,6 @@
 /* override styles for login screen in guest.css */
 #header .logo,
 #header .logo-icon {
-	background-size: contain;
 	background-image: url(#{$image-logo});
 }
 
@@ -111,4 +110,4 @@ input.primary {
 			}
 		}
 	}
-}
\ No newline at end of file
+}