diff --git a/win/rfb_win32/EventManager.cxx b/win/rfb_win32/EventManager.cxx
index 0f9993b..2675080 100644
--- a/win/rfb_win32/EventManager.cxx
+++ b/win/rfb_win32/EventManager.cxx
@@ -43,9 +43,9 @@
 }
 
 void EventManager::removeEvent(HANDLE event) {
-  for (int i=0; i<eventCount; i++) {
+  for (unsigned int i=0; i<eventCount; i++) {
     if (events[i] == event) {
-      for (int j=i; j<eventCount-1; j++) {
+      for (unsigned int j=i; j<eventCount-1; j++) {
         events[j] = events[j+1];
         handlers[j] = handlers[j+1];
       }
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;
     };
 
   };