diff --git a/src/Base/GeometryPyCXX.cpp b/src/Base/GeometryPyCXX.cpp
index 67c5d374ce..c0a30195e5 100644
--- a/src/Base/GeometryPyCXX.cpp
+++ b/src/Base/GeometryPyCXX.cpp
@@ -225,11 +225,6 @@ Py::Object Vector2dPy::number_float()
     throw Py::TypeError("Not defined");
 }
 
-Py::Object Vector2dPy::number_long()
-{
-    throw Py::TypeError("Not defined");
-}
-
 Py::Object Vector2dPy::number_add( const Py::Object & py)
 {
     Vector2d u(Py::toVector2d(py));
diff --git a/src/Base/GeometryPyCXX.h b/src/Base/GeometryPyCXX.h
index e530f64cef..4063b24241 100644
--- a/src/Base/GeometryPyCXX.h
+++ b/src/Base/GeometryPyCXX.h
@@ -83,7 +83,6 @@ public:
     Py::Object number_invert() override;
     Py::Object number_int() override;
     Py::Object number_float() override;
-    Py::Object number_long() override;
     Py::Object number_add( const Py::Object & ) override;
     Py::Object number_subtract( const Py::Object & ) override;
     Py::Object number_multiply( const Py::Object & ) override;