diff --git a/demos/gtk-demo/listview_settings.ui b/demos/gtk-demo/listview_settings.ui
index 05d6ef8b4f..c5405b9c50 100644
--- a/demos/gtk-demo/listview_settings.ui
+++ b/demos/gtk-demo/listview_settings.ui
@@ -63,12 +63,12 @@
               <object class="GtkSearchBar">
                 <property name="search-mode-enabled" bind-source="search_button" bind-property="active" bind-flags="bidirectional"/>
                 <signal name="notify::search-mode-enabled" handler="search_enabled" object="entry"/>
-                <child>
+                <property name="child">
                   <object class="GtkSearchEntry" id="entry">
                     <signal name="search-changed" handler="search_changed"/>
                     <signal name="stop-search" handler="stop_search"/>
                   </object>
-                </child>
+                </property>
               </object>
             </child>
             <child>
diff --git a/demos/gtk-demo/listview_settings2.ui b/demos/gtk-demo/listview_settings2.ui
index 30a024cb67..350c20a984 100644
--- a/demos/gtk-demo/listview_settings2.ui
+++ b/demos/gtk-demo/listview_settings2.ui
@@ -26,11 +26,11 @@
           <object class="GtkSearchBar">
             <property name="search-mode-enabled" bind-source="search_button" bind-property="active" bind-flags="bidirectional"/>
             <signal name="notify::search-mode-enabled" handler="search_enabled" object="entry"/>
-            <child>
+            <property name="child">
               <object class="GtkSearchEntry" id="entry">
                 <signal name="stop-search" handler="stop_search"/>
               </object>
-            </child>
+            </property>
           </object>
         </child>
         <child>
diff --git a/demos/gtk-demo/main.ui b/demos/gtk-demo/main.ui
index 6fdbaba960..ba3404440f 100644
--- a/demos/gtk-demo/main.ui
+++ b/demos/gtk-demo/main.ui
@@ -64,14 +64,14 @@
                   <relation name="labelled-by">search-entry</relation>
                 </accessibility>
                 <property name="key-capture-widget">window</property>
-                <child>
+                <property name="child">
                   <object class="GtkSearchEntry" id="search-entry">
                     <accessibility>
                       <property name="label" translatable="yes">Search</property>
                       <relation name="controls">listview</relation>
                     </accessibility>
                   </object>
-                </child>
+                </property>
               </object>
             </child>
             <child>
diff --git a/demos/widget-factory/widget-factory.ui b/demos/widget-factory/widget-factory.ui
index 6d8d7e36a3..6543e37bc8 100644
--- a/demos/widget-factory/widget-factory.ui
+++ b/demos/widget-factory/widget-factory.ui
@@ -1941,9 +1941,9 @@ microphone-sensitivity-medium-symbolic</property>
                                     </child>
                                     <child>
                                       <object class="GtkSearchBar" id="searchbar">
-                                        <child>
+                                        <property name="child">
                                           <object class="GtkSearchEntry"/>
-                                        </child>
+                                        </property>
                                       </object>
                                     </child>
                                     <child>
diff --git a/gtk/gtksearchbar.c b/gtk/gtksearchbar.c
index 514225786f..02f76c0a01 100644
--- a/gtk/gtksearchbar.c
+++ b/gtk/gtksearchbar.c
@@ -31,6 +31,7 @@
 
 #include "gtkbinlayout.h"
 #include "gtkbuildable.h"
+#include "gtkbuilderprivate.h"
 #include "gtkbutton.h"
 #include "gtkcenterbox.h"
 #include "gtkentryprivate.h"
@@ -145,9 +146,14 @@ gtk_search_bar_buildable_add_child (GtkBuildable *buildable,
                                     const char   *type)
 {
   if (GTK_IS_WIDGET (child))
-    gtk_search_bar_set_child (GTK_SEARCH_BAR (buildable), GTK_WIDGET (child));
+    {
+      gtk_buildable_child_deprecation_warning (buildable, builder, NULL, "child");
+      gtk_search_bar_set_child (GTK_SEARCH_BAR (buildable), GTK_WIDGET (child));
+    }
   else
-    parent_buildable_iface->add_child (buildable, builder, child, type);
+    {
+      parent_buildable_iface->add_child (buildable, builder, child, type);
+    }
 }
 
 static void
diff --git a/gtk/ui/gtkappchooserdialog.ui b/gtk/ui/gtkappchooserdialog.ui
index 2437d601d4..d923941c53 100644
--- a/gtk/ui/gtkappchooserdialog.ui
+++ b/gtk/ui/gtkappchooserdialog.ui
@@ -11,12 +11,12 @@
         <property name="spacing">2</property>
         <child>
           <object class="GtkSearchBar" id="search_bar">
-            <child>
+            <property name="child">
               <object class="GtkSearchEntry" id="search_entry">
                 <property name="hexpand">1</property>
                 <property name="max-width-chars">40</property>
               </object>
-            </child>
+            </property>
           </object>
         </child>
         <child internal-child="action_area">