diff --git a/include/hdf5libs/HDF5RawDataFile.hpp b/include/hdf5libs/HDF5RawDataFile.hpp
index 47561c7..20d7252 100644
--- a/include/hdf5libs/HDF5RawDataFile.hpp
+++ b/include/hdf5libs/HDF5RawDataFile.hpp
@@ -506,11 +506,6 @@ HDF5RawDataFile::write_attribute(HighFive::DataSet& dset, const std::string& nam
     ers::warning(HDF5AttributeExists(ERS_HERE, name));
 }
 
-std::vector<std::string> HDF5RawDataFile::get_attribute_names()
-{
-  return m_file_ptr->listAttributeNames();
-}
-
 template<typename T>
 T
 HDF5RawDataFile::get_attribute(const std::string& name)
diff --git a/src/HDF5RawDataFile.cpp b/src/HDF5RawDataFile.cpp
index 566a434..f6c6309 100644
--- a/src/HDF5RawDataFile.cpp
+++ b/src/HDF5RawDataFile.cpp
@@ -103,6 +103,15 @@ HDF5RawDataFile::~HDF5RawDataFile()
   m_file_layout_ptr.reset();
 }
 
+/**
+ * @brief Fetch the list of all file-level Attribute names.
+ */
+std::vector<std::string>
+HDF5RawDataFile::HDF5RawDataFile::get_attribute_names()
+{
+  return m_file_ptr->listAttributeNames();
+}
+
 /**
  * @brief Write a TriggerRecord to the file.
  */