diff --git a/subprojects/extensions-app/data/org.gnome.Extensions.gschema.xml b/subprojects/extensions-app/data/org.gnome.Extensions.gschema.xml
index d88bb87a3..4951f16e2 100644
--- a/subprojects/extensions-app/data/org.gnome.Extensions.gschema.xml
+++ b/subprojects/extensions-app/data/org.gnome.Extensions.gschema.xml
@@ -1,4 +1,4 @@
-<?<?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <schemalist>
   <schema path="/org/gnome/Extensions/" id="org.gnome.Extensions">
     <key name="window-width" type="i">