diff --git a/projects/roctracer/test/tool/tracer_tool.cpp b/projects/roctracer/test/tool/tracer_tool.cpp
index 7f22776660..b819fd0a1d 100644
--- a/projects/roctracer/test/tool/tracer_tool.cpp
+++ b/projects/roctracer/test/tool/tracer_tool.cpp
@@ -398,16 +398,19 @@ void hip_api_flush_cb(hip_api_trace_entry_t* entry) {
   const hip_api_data_t* data = &(entry->data);
   const timestamp_t begin_timestamp = entry->begin;
   const timestamp_t end_timestamp = entry->end;
-  std::ostringstream oss;                                                                        \
+  std::ostringstream oss;
+  std::ostringstream oss2;
 
   const char* str = (domain != ACTIVITY_DOMAIN_EXT_API) ? roctracer_op_string(domain, cid, 0) : strdup("MARK");
   oss << std::dec <<
     begin_timestamp << ":" << end_timestamp << " " << entry->pid << ":" << entry->tid << " " << str;
+  oss2 << std::dec <<
+    begin_timestamp << ":" << end_timestamp << " " << entry->pid << ":" << entry->tid;
 
   if (domain == ACTIVITY_DOMAIN_HIP_API) {
 #if HIP_PROF_HIP_API_STRING
     const char* str = hipApiString((hip_api_id_t)cid, data);
-    fprintf(hip_api_file_handle, "%s\n", str);
+    fprintf(hip_api_file_handle, "%s %s\n", oss2.str().c_str(), str);
 #else  // !HIP_PROF_HIP_API_STRING
     switch (cid) {
       case HIP_API_ID_hipMemcpy: