diff --git a/subprojects/extensions-app/data/ui/extensions-window.ui b/subprojects/extensions-app/data/ui/extensions-window.ui
index 6779e8edf..2802a878b 100644
--- a/subprojects/extensions-app/data/ui/extensions-window.ui
+++ b/subprojects/extensions-app/data/ui/extensions-window.ui
@@ -64,6 +64,7 @@
                       bind-flags="bidirectional"/>
             <child>
               <object class="GtkSearchEntry" id="searchEntry">
+                <property name="placeholder-text" translatable="yes">Search extensions</property>
                 <property name="max-width-chars">35</property>
               </object>
             </child>