diff --git a/packages/server/test/unit/browsers/electron_spec.coffee b/packages/server/test/unit/browsers/electron_spec.coffee
index 5fcd43cffd4b..65b2842a3c83 100644
--- a/packages/server/test/unit/browsers/electron_spec.coffee
+++ b/packages/server/test/unit/browsers/electron_spec.coffee
@@ -34,6 +34,9 @@ describe "lib/browsers/electron", ->
             remove: sinon.stub()
           }
         }
+        "debugger": {
+          sendCommandAsync: sinon.stub().resolves()
+        }
       }
     })