diff --git a/lib/x11/corereqs.js b/lib/x11/corereqs.js
index d09107e..5dd5d05 100644
--- a/lib/x11/corereqs.js
+++ b/lib/x11/corereqs.js
@@ -633,6 +633,12 @@ module.exports = {
        }
    ],
 
+   SetScreenSaver: [
+       function(timeout, interval, preferBlanking, allowExposures) {
+           return [ 'CxSSSCCxx', [107, 3, timeout, interval, preferBlanking, allowExposures]];
+       } 
+   ],
+
    ForceScreenSaver: [
        function(activate) {
            return [ 'CCS', [115, activate?1:0, 1] ];