diff --git a/src/unix/threadpsx.cpp b/src/unix/threadpsx.cpp
index b30021a122..c9915fa3b4 100644
--- a/src/unix/threadpsx.cpp
+++ b/src/unix/threadpsx.cpp
@@ -835,7 +835,9 @@ bool wxThread::IsMain()
 
 void wxThread::Yield()
 {
+#ifdef HAVE_SCHED_YIELD
     sched_yield();
+#endif
 }
 
 void wxThread::Sleep(unsigned long milliseconds)