diff --git a/src/profiling/ProfilingUtils.hpp b/src/profiling/ProfilingUtils.hpp
index b6a4de9..47a6d3f 100644
--- a/src/profiling/ProfilingUtils.hpp
+++ b/src/profiling/ProfilingUtils.hpp
@@ -137,6 +137,10 @@
                                                     unsigned int bufferSize,
                                                     unsigned int& numberOfBytesWritten);
 
+TimelinePacketStatus WriteTimelineMessageDirectoryPackage(unsigned char* buffer,
+                                                          unsigned int bufferSize,
+                                                          unsigned int& numberOfBytesWritten);
+
 class BufferExhaustion : public armnn::Exception
 {
     using Exception::Exception;