diff --git a/src/ifcgeom/ConversionSettings.h b/src/ifcgeom/ConversionSettings.h
index 9b7b78c53b..a9e24d5c4c 100644
--- a/src/ifcgeom/ConversionSettings.h
+++ b/src/ifcgeom/ConversionSettings.h
@@ -253,7 +253,10 @@ namespace ifcopenshell {
 
 			struct OutputDimensionality : public SettingBase<OutputDimensionality, OutputDimensionalityTypes> {
 				static constexpr const char* const name = "dimensionality";
-				static constexpr const char* const description = "Specifies whether to include curves and/or surfaces and solids in the output result. Defaults to only surfaces and solids.";
+				static constexpr const char* const description =
+					"Specifies whether to include curves and/or surfaces and solids in the output result. "
+					"Defaults to only surfaces and solids (SURFACES_AND_SOLIDS). "
+					"Other possible values are CURVES, CURVES_SURFACES_AND_SOLIDS.";
 				static constexpr OutputDimensionalityTypes defaultvalue = SURFACES_AND_SOLIDS;
 			};