diff --git a/scripts/openbabel-python.i b/scripts/openbabel-python.i
index ce88c71ab..1f1792c3f 100644
--- a/scripts/openbabel-python.i
+++ b/scripts/openbabel-python.i
@@ -232,6 +232,7 @@ CAST_GENERICDATA_TO(UnitCell)
 CAST_GENERICDATA_TO(VectorData)
 CAST_GENERICDATA_TO(VibrationData)
 CAST_GENERICDATA_TO(VirtualBond)
+CAST_GENERICDATA_TO(StereoBase)
 CAST_GENERICDATA_TO(TetrahedralStereo)
 CAST_GENERICDATA_TO(CisTransStereo)
 CAST_GENERICDATA_TO(SquarePlanarStereo)