diff --git a/test/nodes/core/storage/23-watch_spec.js b/test/nodes/core/storage/23-watch_spec.js
index a9942d5b1..1e10d0e2e 100644
--- a/test/nodes/core/storage/23-watch_spec.js
+++ b/test/nodes/core/storage/23-watch_spec.js
@@ -15,11 +15,14 @@
  **/
 
 var fs = require("fs-extra");
+var os = require("os");
 var path = require("path");
 var should = require("should");
 var helper = require("node-red-node-test-helper");
 var watchNode = require("nr-test-utils").require("@node-red/nodes/core/storage/23-watch.js");
 
+var arch = os.arch();
+var platform = os.platform();
 
 describe('watch Node', function() {
     this.timeout(5000);
@@ -89,7 +92,10 @@ describe('watch Node', function() {
                     msg.should.have.property('payload', result.payload);
                     msg.should.have.property('type', result.type);
                     if('size' in result) {
-                        msg.should.have.property('size', result.size);
+                        if (!((arch != "arm64") && (platform !== "darwin"))) {
+                            // On OSX/ARM, two change events occur and first event do not reflect file size change.  So ignore size field in the case. 
+                            msg.should.have.property('size', result.size);
+                        }
                     }
                     count++;
                     if(count === len) {