diff --git a/res/css/views/dialogs/_SettingsDialog.scss b/res/css/views/dialogs/_SettingsDialog.scss
index 609e2564bc..925f966216 100644
--- a/res/css/views/dialogs/_SettingsDialog.scss
+++ b/res/css/views/dialogs/_SettingsDialog.scss
@@ -41,13 +41,10 @@ limitations under the License.
             margin-top: 16px;
             margin-bottom: 24px;
         }
-        .mx_Dialog_fixedWidth {
-            width: 100%;
-        }
 
         .mx_Dialog_fixedWidth {
             max-width: 1000px;
-            width: 90%;
+            width: 90vw;
         }
     }
 }