diff --git a/include/highfive/bits/H5Node_traits.hpp b/include/highfive/bits/H5Node_traits.hpp
index f585ae6c6..d53d3f048 100644
--- a/include/highfive/bits/H5Node_traits.hpp
+++ b/include/highfive/bits/H5Node_traits.hpp
@@ -129,6 +129,10 @@ class NodeTraits {
     /// \return the group object
     Group getGroup(const std::string& group_name) const;
 
+    ///
+    /// \brief open a commited datatype with the name type_name
+    /// \param type_name
+    /// \return the datatype object
     DataType getDataType(
         const std::string& type_name,
         const DataTypeAccessProps& accessProps = DataTypeAccessProps::Default()) const;
diff --git a/tests/unit/tests_high_five_base.cpp b/tests/unit/tests_high_five_base.cpp
index 047beb706..6b4c8fb0c 100644
--- a/tests/unit/tests_high_five_base.cpp
+++ b/tests/unit/tests_high_five_base.cpp
@@ -2870,16 +2870,22 @@ TEST_CASE("HighFiveEnum") {
 TEST_CASE("HighFiveReadType") {
     const std::string file_name("readtype_test.h5");
     const std::string datatype_name1("my_type");
+    const std::string datatype_name2("position");
 
     File file(file_name, File::ReadWrite | File::Create | File::Truncate);
 
-    auto t3 = AtomicType<int>();
     CompoundType t1 = create_compound_csl1();
     t1.commit(file, datatype_name1);
 
     CompoundType t2 = file.getDataType(datatype_name1);
 
+    auto t3 = create_enum_position();
+    t3.commit(file, datatype_name2);
+
+    DataType t4 = file.getDataType(datatype_name2);
+
     CHECK(t2 == t1);
+    CHECK(t4 == t3);
 }
 
 TEST_CASE("HighFiveFixedString") {