diff --git a/windows/JackWinThread.cpp b/windows/JackWinThread.cpp
index 45f06e78..30857492 100644
--- a/windows/JackWinThread.cpp
+++ b/windows/JackWinThread.cpp
@@ -20,6 +20,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
 #include "JackWinThread.h"
 #include "JackError.h"
+#include "JackTime.h"
 #include <assert.h>
 
 namespace Jack