diff --git a/core-buffer/include/FastH5Writer.hpp b/core-buffer/include/FastH5Writer.hpp
index f760bf0..fa8f3b3 100644
--- a/core-buffer/include/FastH5Writer.hpp
+++ b/core-buffer/include/FastH5Writer.hpp
@@ -51,7 +51,7 @@ public:
 
     void write_data(const char* buffer);
     template <class T> void write_metadata(
-            const std::string& name, const T& value);
+            const std::string& name, const T* value);
 
 };
 
diff --git a/core-buffer/src/FastH5Writer.cpp b/core-buffer/src/FastH5Writer.cpp
index 6134eb8..679d48c 100644
--- a/core-buffer/src/FastH5Writer.cpp
+++ b/core-buffer/src/FastH5Writer.cpp
@@ -144,6 +144,13 @@ void FastH5Writer::write_data(const char *buffer)
         }
 }
 
+template <class T> void FastH5Writer::write_metadata(
+        const std::string& name, const T* value)
+{
+    auto buffer_ptr = buffers_.at(name);
+    buffer_ptr.get()[current_frame_index_] = value;
+}
+
 template <>
 void FastH5Writer::add_scalar_metadata<uint64_t>(
         const std::string& metadata_name)