diff --git a/gen_vor.js b/gen_vor.js
index 89dedaf..0d7add3 100644
--- a/gen_vor.js
+++ b/gen_vor.js
@@ -15,7 +15,9 @@ try {
 const lines = text.split('\n').filter(function(e){return e});
 var vor = '| | |  |   \n|:------|:------|:------|\n';
 var dat = Date.today();
-if (dat.fourth().tuesday() <= dat) {
+// Clone object first
+var fourth = dat.clone().fourth().tuesday();
+if (Date.compare(dat, fourth) == 1) {
     dat = (1).months().fromNow();
     dat = dat.fourth().tuesday();
 }