diff --git a/sf-buffer-writer/src/BufferBinaryWriter.cpp b/sf-buffer-writer/src/BufferBinaryWriter.cpp
index f892704..78eef20 100644
--- a/sf-buffer-writer/src/BufferBinaryWriter.cpp
+++ b/sf-buffer-writer/src/BufferBinaryWriter.cpp
@@ -29,7 +29,7 @@ BufferBinaryWriter::~BufferBinaryWriter()
 }
 
 void BufferBinaryWriter::write(
-        uint64_t pulse_id,
+        const uint64_t pulse_id,
         const BufferBinaryFormat* buffer)
 {
     auto current_frame_file =