diff --git a/src/Mod/Part/App/HLRBRep/HLRBRep_AlgoPyImp.cpp b/src/Mod/Part/App/HLRBRep/HLRBRep_AlgoPyImp.cpp
index b0cf0f2729..1638ae798f 100644
--- a/src/Mod/Part/App/HLRBRep/HLRBRep_AlgoPyImp.cpp
+++ b/src/Mod/Part/App/HLRBRep/HLRBRep_AlgoPyImp.cpp
@@ -114,7 +114,7 @@ PyObject* HLRBRep_AlgoPy::setProjector(PyObject *args, PyObject *kwds)
     PyObject* xd = nullptr;
     double focus = std::numeric_limits<double>::quiet_NaN();
 
-    static const std::array<const char *, 4> kwlist {"Origin", "ZDir", "XDir", nullptr};
+    static const std::array<const char *, 5> kwlist {"Origin", "ZDir", "XDir", "focus", nullptr};
     if (Base::Wrapped_ParseTupleAndKeywords(args, kwds, "|O!O!O!d", kwlist,
                                             &Base::VectorPy::Type, &ps,
                                             &Base::VectorPy::Type, &zd,