diff --git a/src/corelib/kernel/qsharedmemory_p.h b/src/corelib/kernel/qsharedmemory_p.h
index 59802eb6ce..bf7c42dc62 100644
--- a/src/corelib/kernel/qsharedmemory_p.h
+++ b/src/corelib/kernel/qsharedmemory_p.h
@@ -69,7 +69,7 @@ namespace QSharedMemoryPrivate
 #include "qsystemsemaphore.h"
 #include "private/qobject_p.h"
 
-#if !defined(Q_OS_WIN) && !defined(Q_OS_ANDROID) && !defined(Q_OS_INTEGRITY)
+#if !defined(Q_OS_WIN) && !defined(Q_OS_ANDROID) && !defined(Q_OS_INTEGRITY) && !defined(Q_OS_RTEMS)
 #  include <sys/sem.h>
 #endif