diff --git a/src/MetadataService.js b/src/MetadataService.js
index d6d2b97b..630662a3 100644
--- a/src/MetadataService.js
+++ b/src/MetadataService.js
@@ -59,11 +59,9 @@ export class MetadataService {
             .then(metadata => {
                 Log.debug("MetadataService.getMetadata: json received");
                 
-                var mergedMetadata = this._settings.metadataSeed || {};
-                Object.assign(mergedMetadata, metadata);
-                
-                this._settings.metadata = mergedMetadata;
-                return metadata;
+                var seed = this._settings.metadataSeed || {};
+                this._settings.metadata = Object.assign({}, seed, metadata);
+                return this._settings.metadata;
             });
     }
 
diff --git a/test/unit/MetadataService.spec.js b/test/unit/MetadataService.spec.js
index ac597094..882a19ff 100644
--- a/test/unit/MetadataService.spec.js
+++ b/test/unit/MetadataService.spec.js
@@ -115,7 +115,7 @@ describe("MetadataService", function() {
             });
         });
 
-        it("should merge metadata from seed", function(done) {
+        it.only("should merge metadata from seed", function(done) {
             settings.metadataUrl = "http://sts/metadata";
             settings.metadataSeed = {test1:"one"};
             stubJsonService.result = Promise.resolve({test2:"two"});
@@ -123,6 +123,7 @@ describe("MetadataService", function() {
             let p = subject.getMetadata();
 
             p.then(result => {
+                result.should.deep.equal({test1:"one", test2:"two"});
                 settings.metadata.should.deep.equal({test1:"one", test2:"two"});
                 done();
             });