diff --git a/nodes/core/core/89-delay.js b/nodes/core/core/89-delay.js
index dfc5616ae..3a299caeb 100644
--- a/nodes/core/core/89-delay.js
+++ b/nodes/core/core/89-delay.js
@@ -62,8 +62,8 @@ module.exports = function(RED) {
         }
 
         if (n.randomUnits === "milliseconds") {
-            this.randomFirst = n.randomFirst;
-            this.randomLast = n.randomLast;
+            this.randomFirst = n.randomFirst * 1;
+            this.randomLast = n.randomLast * 1;
         } else if (n.randomUnits === "seconds") {
             this.randomFirst = n.randomFirst * 1000;
             this.randomLast = n.randomLast * 1000;
diff --git a/test/nodes/core/core/89-delay_spec.js b/test/nodes/core/core/89-delay_spec.js
index 22c3173a5..87ca6088f 100644
--- a/test/nodes/core/core/89-delay_spec.js
+++ b/test/nodes/core/core/89-delay_spec.js
@@ -368,7 +368,7 @@ describe('delayNode', function() {
     });
     
     it(' randomly delays the message in milliseconds', function(done) {
-        randomDelayTest(400, 800, "milliseconds", done);
+        randomDelayTest("400", "800", "milliseconds", done);
     });
     
     it('randomly delays the message in minutes', function(done) {