Index: /trunk/src/VBox/Storage/testcase/tstVDIo.cpp
===================================================================
--- /trunk/src/VBox/Storage/testcase/tstVDIo.cpp	(revision 35596)
+++ /trunk/src/VBox/Storage/testcase/tstVDIo.cpp	(revision 35597)
@@ -28,4 +28,5 @@
 #include <iprt/ctype.h>
 #include <iprt/semaphore.h>
+#include <iprt/thread.h>
 
 #include "VDMemDisk.h"