diff --git a/src/xmlpatterns/api/qxmlschema.cpp b/src/xmlpatterns/api/qxmlschema.cpp
index a05708ff183f7d5f68be9c414d1b343ff9e3beb6..2ce6a5757010ae1f6c015c00dde4c774a2bd6723 100644
--- a/src/xmlpatterns/api/qxmlschema.cpp
+++ b/src/xmlpatterns/api/qxmlschema.cpp
@@ -93,6 +93,17 @@ QXmlSchema::QXmlSchema(const QXmlSchema &other)
 {
 }
 
+/*!
+  \since 5.4
+  Copies the resources of \a other into this instance, sharing
+  them to the extent possible.
+ */
+QXmlSchema &QXmlSchema::operator =(const QXmlSchema &other)
+{
+    d = other.d;
+    return *this;
+}
+
 /*!
   Destroys this QXmlSchema.
  */
diff --git a/src/xmlpatterns/api/qxmlschema.h b/src/xmlpatterns/api/qxmlschema.h
index dedabfb92d0a33fbdd8dfa7d0f4b53992a434a8e..6f081ed69316c5f7b30f16a282739a0c2f105a6c 100644
--- a/src/xmlpatterns/api/qxmlschema.h
+++ b/src/xmlpatterns/api/qxmlschema.h
@@ -64,6 +64,7 @@ class Q_XMLPATTERNS_EXPORT QXmlSchema
     public:
         QXmlSchema();
         QXmlSchema(const QXmlSchema &other);
+        QXmlSchema &operator=(const QXmlSchema &other);
         ~QXmlSchema();
 
         bool load(const QUrl &source);