diff --git a/source/blender/blenkernel/intern/curves_geometry.cc b/source/blender/blenkernel/intern/curves_geometry.cc
index de6c6fe80ec..ccb67ec91d0 100644
--- a/source/blender/blenkernel/intern/curves_geometry.cc
+++ b/source/blender/blenkernel/intern/curves_geometry.cc
@@ -244,6 +244,9 @@ static MutableSpan<T> get_mutable_attribute(CurvesGeometry &curves,
                                             const T default_value = T())
 {
   const int num = domain_num(curves, domain);
+  if (num <= 0) {
+    return {};
+  }
   const eCustomDataType type = cpp_type_to_custom_data_type(CPPType::get<T>());
   CustomData &custom_data = domain_custom_data(curves, domain);