diff --git a/src/lib/arch/unix/ArchMultithreadPosix.cpp b/src/lib/arch/unix/ArchMultithreadPosix.cpp
index 2f47c400..599d3b88 100644
--- a/src/lib/arch/unix/ArchMultithreadPosix.cpp
+++ b/src/lib/arch/unix/ArchMultithreadPosix.cpp
@@ -449,7 +449,7 @@ ArchMultithreadPosix::cancelThread(ArchThread thread)
 }
 
 void
-ArchMultithreadPosix::setPriorityOfThread(ArchThread  /*thread*/, int /*n*/)
+ArchMultithreadPosix::setPriorityOfThread(ArchThread  thread, int /*n*/)
 {
     assert(thread != NULL);