diff --git a/libkineto/include/ILoggerObserver.h b/libkineto/include/ILoggerObserver.h
index d20fb1a8..b0bb4618 100644
--- a/libkineto/include/ILoggerObserver.h
+++ b/libkineto/include/ILoggerObserver.h
@@ -15,6 +15,10 @@ constexpr char kWarmUpStage[] = "Warm Up";
 constexpr char kCollectionStage[] = "Collection";
 constexpr char kPostProcessingStage[] = "Post Processing";
 
+// Special string in UST for determining if traces are empty
+constexpr char kEmptyTrace[] =
+    "No Valid Trace Events (CPU/GPU) found. Outputting empty trace.";
+
 #if !USE_GOOGLE_LOG
 
 #include <map>
diff --git a/libkineto/src/CuptiActivityProfiler.cpp b/libkineto/src/CuptiActivityProfiler.cpp
index 0f742d4e..bef8825e 100644
--- a/libkineto/src/CuptiActivityProfiler.cpp
+++ b/libkineto/src/CuptiActivityProfiler.cpp
@@ -375,8 +375,7 @@ void CuptiActivityProfiler::processTraceInternal(ActivityLogger& logger) {
   }
 #endif // HAS_ROCTRACER
   if (!traceNonEmpty()) {
-    LOG(WARNING)
-        << "No Valid Trace Events (CPU/GPU) found. Outputting empty trace.";
+    LOG(WARNING) << kEmptyTrace;
   }
 
   for (const auto& session : sessions_) {