diff --git a/core-buffer/include/buffer_config.hpp b/core-buffer/include/buffer_config.hpp
index 1d06cdc..e1e26dc 100644
--- a/core-buffer/include/buffer_config.hpp
+++ b/core-buffer/include/buffer_config.hpp
@@ -51,6 +51,13 @@ namespace core_buffer {
     // HWM for live stream from buffer.
     const int BUFFER_ZMQ_SNDHWM = 100;
 
+    // Name of the dataset where we store the images.
+    const std::string BUFFER_H5_FRAME_DATASET = "image";
+
+    // Name of the dataset where we store metadata.
+    const std::string BUFFER_H5_METADATA_DATASET = "metadata";
+
+    // IPC address of the live stream.
     const std::string BUFFER_LIVE_IPC_URL = "ipc:///tmp/sf-live-";
 
     // N of IO threads to receive data from modules.
diff --git a/core-buffer/src/BufferH5Writer.cpp b/core-buffer/src/BufferH5Writer.cpp
index eb492a6..1f3d021 100644
--- a/core-buffer/src/BufferH5Writer.cpp
+++ b/core-buffer/src/BufferH5Writer.cpp
@@ -38,7 +38,7 @@ void BufferH5Writer::create_file(const string& filename)
     data_dset_prop.setChunk(3, data_dset_chunking);
 
     current_image_dataset_ = h5_file_.createDataSet(
-            "image",
+            BUFFER_H5_FRAME_DATASET,
             H5::PredType::NATIVE_UINT16,
             data_dspace,
             data_dset_prop);
@@ -49,7 +49,7 @@ void BufferH5Writer::create_file(const string& filename)
     meta_dset_prop.setChunk(2, meta_dset_chunking);
 
     current_metadata_dataset_ = h5_file_.createDataSet(
-            "metadata",
+            BUFFER_H5_METADATA_DATASET,
             H5::PredType::NATIVE_UINT64,
             meta_dspace,
             meta_dset_prop);