diff --git a/unix/vncserver b/unix/vncserver
index 73e9c3a..69b9688 100755
--- a/unix/vncserver
+++ b/unix/vncserver
@@ -25,6 +25,7 @@
 # vncserver - wrapper script to start an X VNC server.
 #
 
+use v5.10;
 use Time::HiRes qw (sleep);
 
 &DetectEnvironment();