diff --git a/src/PythonQt.cpp b/src/PythonQt.cpp
index 4d01a15bb..e29498b29 100644
--- a/src/PythonQt.cpp
+++ b/src/PythonQt.cpp
@@ -260,6 +260,9 @@ void PythonQt::init(int flags, const QByteArray& pythonQtModuleName)
     PythonQtRegisterToolClassesTemplateConverterForKnownClass(QPen);
     PythonQtRegisterToolClassesTemplateConverterForKnownClass(QTextLength);
     PythonQtRegisterToolClassesTemplateConverterForKnownClass(QTextFormat);
+#if QT_VERSION < 0x060000
+    PythonQtRegisterToolClassesTemplateConverterForKnownClass(QMatrix);
+#endif
 
     PyObject* pack = PythonQt::priv()->packageByName("QtCore");
     PyObject* pack2 = PythonQt::priv()->packageByName("Qt");
diff --git a/src/PythonQtVariants.h b/src/PythonQtVariants.h
index 833f35c8a..d2ba9eff6 100644
--- a/src/PythonQtVariants.h
+++ b/src/PythonQtVariants.h
@@ -72,6 +72,9 @@
 #include <QPen>
 #include <QTextLength>
 #include <QTextFormat>
+#if QT_VERSION < 0x060000
+#include <QMatrix>
+#endif
 
 #endif