diff --git a/packages/concerto-core/test/modelmanager.js b/packages/concerto-core/test/modelmanager.js
index ff068c6c8..a2d0c2a04 100644
--- a/packages/concerto-core/test/modelmanager.js
+++ b/packages/concerto-core/test/modelmanager.js
@@ -712,7 +712,7 @@ concept Bar {
             modelManager.getModelFile('org.acme').should.not.be.null;
 
             // import all external models
-            return modelManager.updateExternalModels().should.be.rejectedWith(Error, 'Unable to download external model dependency \'github://external.cto\'');
+            return modelManager.updateExternalModels().should.be.rejectedWith(Error, 'Failed to load model file. Job: github://external.cto Details: Error: HTTP request failed with status: 400');
         });
 
         it('should fail using bad protocol and default model file loader', () => {