diff --git a/perf/inproc_thr.cpp b/perf/inproc_thr.cpp
index 5dcbabd7..08fb4bf3 100644
--- a/perf/inproc_thr.cpp
+++ b/perf/inproc_thr.cpp
@@ -125,7 +125,7 @@ int main (int argc, char *argv [])
     double megabits;
 
     if (argc != 3) {
-        printf ("usage: thread_thr <message-size> <message-count>\n");
+        printf ("usage: inproc_thr <message-size> <message-count>\n");
         return 1;
     }