diff --git a/contrib/prtview/portals.cpp b/contrib/prtview/portals.cpp
index 53a02d2c..fcf0eec2 100644
--- a/contrib/prtview/portals.cpp
+++ b/contrib/prtview/portals.cpp
@@ -30,7 +30,7 @@
 
 #include "prtview.h"
 
-#define LINE_BUF 1000
+#define LINE_BUF 4096
 
 CPortals portals;
 CPortalsRender render;