diff --git a/src/EasyGenView.cpp b/src/EasyGenView.cpp
index 296c6c6..1ed7001 100644
--- a/src/EasyGenView.cpp
+++ b/src/EasyGenView.cpp
@@ -1028,7 +1028,7 @@ void CEasyGenView::OnLButtonDblClk(UINT nFlags, CPoint point)
 	CView::OnLButtonDblClk(nFlags, point);
 }
 
-void CEasyGenView::OnTimer(UINT nIDEvent)
+void CEasyGenView::OnTimer(UINT_PTR nIDEvent)
 {
 	CView::OnTimer(nIDEvent);
 /*
diff --git a/src/EasyGenView.h b/src/EasyGenView.h
index c0d753b..a954565 100644
--- a/src/EasyGenView.h
+++ b/src/EasyGenView.h
@@ -109,7 +109,7 @@ protected:
 	afx_msg void OnRButtonUp(UINT nFlags, CPoint point);
 	afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags);
 	afx_msg void OnLButtonDblClk(UINT nFlags, CPoint point);
-	afx_msg void OnTimer(UINT nIDEvent);
+	afx_msg void OnTimer(UINT_PTR nIDEvent);
 	afx_msg void OnRButtonDblClk(UINT nFlags, CPoint point);
 	afx_msg void OnCameraAlign();
 	afx_msg void OnCameraLeft();