diff --git a/res/css/views/dialogs/_HostSignupDialog.scss b/res/css/views/dialogs/_HostSignupDialog.scss
index b2be12a5af..94d691be33 100644
--- a/res/css/views/dialogs/_HostSignupDialog.scss
+++ b/res/css/views/dialogs/_HostSignupDialog.scss
@@ -86,7 +86,7 @@ limitations under the License.
 }
 
 .mx_HostSignup_minimize_button {
-    mask: url('$(res)/img/feather-customised/widget/minimize.svg');
+    mask: url('$(res)/img/feather-customised/widget/minimise.svg');
     mask-repeat: no-repeat;
     mask-position: center;
     mask-size: cover;