diff --git a/panels/network/connection-editor/connection-editor.ui b/panels/network/connection-editor/connection-editor.ui
index 0d48cec15..46bde2323 100644
--- a/panels/network/connection-editor/connection-editor.ui
+++ b/panels/network/connection-editor/connection-editor.ui
@@ -4,6 +4,7 @@
   <object class="GtkDialog" id="details_dialog">
     <property name="can_focus">False</property>
     <property name="border_width">5</property>
+    <property name="resizable">False</property>
     <property name="modal">True</property>
     <property name="default_width">600</property>
     <property name="default_height">300</property>
diff --git a/panels/network/network-wifi.ui b/panels/network/network-wifi.ui
index f9867823f..6ee277367 100644
--- a/panels/network/network-wifi.ui
+++ b/panels/network/network-wifi.ui
@@ -4,6 +4,7 @@
   <object class="GtkDialog" id="details_dialog">
     <property name="can_focus">False</property>
     <property name="border_width">5</property>
+    <property name="resizable">False</property>
     <property name="modal">True</property>
     <property name="default_width">600</property>
     <property name="default_height">300</property>
@@ -1480,6 +1481,7 @@ here</property>
   <object class="GtkDialog" id="hotspot-dialog">
     <property name="can_focus">False</property>
     <property name="border_width">5</property>
+    <property name="resizable">False</property>
     <property name="modal">True</property>
     <property name="destroy_with_parent">True</property>
     <property name="type_hint">dialog</property>