diff --git a/vncviewer/vncviewer.h b/vncviewer/vncviewer.h
index c98c2e9..88aa933 100644
--- a/vncviewer/vncviewer.h
+++ b/vncviewer/vncviewer.h
@@ -19,7 +19,7 @@
 #ifndef __VNCVIEWER_H__
 #define __VNCVIEWER_H__
 
-#define VNCSERVERNAMELEN 64
+#define VNCSERVERNAMELEN 256
 
 void exit_vncviewer(const char *error = NULL);
 bool should_exit();