diff --git a/core-buffer/include/FastH5Writer.hpp b/core-buffer/include/FastH5Writer.hpp
index fa8f3b3..d351317 100644
--- a/core-buffer/include/FastH5Writer.hpp
+++ b/core-buffer/include/FastH5Writer.hpp
@@ -50,7 +50,7 @@ public:
     void set_pulse_id(const uint64_t pulse_id);
 
     void write_data(const char* buffer);
-    template <class T> void write_metadata(
+    template <class T> void write_scalar_metadata(
             const std::string& name, const T* value);
 
 };
diff --git a/core-buffer/src/FastH5Writer.cpp b/core-buffer/src/FastH5Writer.cpp
index 679d48c..b08be91 100644
--- a/core-buffer/src/FastH5Writer.cpp
+++ b/core-buffer/src/FastH5Writer.cpp
@@ -144,7 +144,7 @@ void FastH5Writer::write_data(const char *buffer)
         }
 }
 
-template <class T> void FastH5Writer::write_metadata(
+template <class T> void FastH5Writer::write_scalar_metadata(
         const std::string& name, const T* value)
 {
     auto buffer_ptr = buffers_.at(name);