diff --git a/tools/profiler/ProfilerIOInterposeObserver.cpp b/tools/profiler/ProfilerIOInterposeObserver.cpp
index a0f6a074253..e77b29b921b 100644
--- a/tools/profiler/ProfilerIOInterposeObserver.cpp
+++ b/tools/profiler/ProfilerIOInterposeObserver.cpp
@@ -36,12 +36,11 @@ void ProfilerIOInterposeObserver::Observe(Observation& aObservation)
   }
   ProfilerBacktrace* stack = profiler_get_backtrace();
 
-  const char *filename = (NS_ConvertUTF16toUTF8(aObservation.Filename())).get();
-
-  IOMarkerPayload* markerPayload = new IOMarkerPayload(aObservation.Reference(),
-                                                       filename,
-                                                       aObservation.Start(),
-                                                       aObservation.End(),
-                                                       stack);
+  IOMarkerPayload* markerPayload = new IOMarkerPayload(
+                           aObservation.Reference(),
+                           NS_ConvertUTF16toUTF8(aObservation.Filename()).get(),
+                           aObservation.Start(),
+                           aObservation.End(),
+                           stack);
   PROFILER_MARKER_PAYLOAD(str, markerPayload);
 }