diff --git a/src/ui/new-call-box.ui b/src/ui/new-call-box.ui
index afd589a..ed19c89 100644
--- a/src/ui/new-call-box.ui
+++ b/src/ui/new-call-box.ui
@@ -5,6 +5,7 @@
   <template class="CallsNewCallBox" parent="AdwBin">
     <child>
       <object class="GtkBox" id="child">
+        <property name="hexpand">True</property>
         <property name="margin-start">24</property>
         <property name="margin-end">24</property>
         <property name="margin_top">6</property>