diff --git a/nodes/core/20-inject.html b/nodes/core/20-inject.html
index 8ab75445b..a4c46ede1 100644
--- a/nodes/core/20-inject.html
+++ b/nodes/core/20-inject.html
@@ -202,7 +202,7 @@
         },
         oneditprepare: function() {
             var repeattype = "none";
-            if (Number(this.repeat) != 0) {
+            if (parseInt(this.repeat) != 0) {
                 repeattype = "interval";
                 $("#inject-time-interval-units option").filter(function() {return $(this).val() == "s";}).attr('selected',true);
                 $("#inject-time-interval-count").val(this.repeat);
@@ -210,7 +210,7 @@
             } else if (this.crontab) {
                 var cronparts = this.crontab.split(" ");
                 var days = cronparts[4];
-                if (Number(cronparts[0]) && Number(cronparts[1])) {
+                if (!isNaN(cronparts[0]) && !isNaN(cronparts[1])) {
                     repeattype = "time";
                     // Fixed time
                     var time = cronparts[1]+":"+cronparts[0];