diff --git a/win/rfb_win32/EventManager.h b/win/rfb_win32/EventManager.h
index bb66e34..cd92d45 100644
--- a/win/rfb_win32/EventManager.h
+++ b/win/rfb_win32/EventManager.h
@@ -68,7 +68,7 @@
 
       HANDLE events[MAXIMUM_WAIT_OBJECTS];
       EventHandler* handlers[MAXIMUM_WAIT_OBJECTS-1];
-      int eventCount;
+      unsigned int eventCount;
     };
 
   };