diff --git a/src/worker/execution-plugins/mapper.ts b/src/worker/execution-plugins/mapper.ts
index 5c2b58d..f3cbf2e 100644
--- a/src/worker/execution-plugins/mapper.ts
+++ b/src/worker/execution-plugins/mapper.ts
@@ -38,7 +38,10 @@ export default class MapperPlugin extends OperatorPlugin implements PluginExecut
     logger.info(this.preLog, 'Object mapping applied')
 
     if (this.options.merge) {
-      return Promise.resolve(Object.assign({}, message, transformedObj))
+      return Promise.resolve({
+        ...message,
+        ...transformedObj,
+      })
     }
 
     return Promise.resolve(transformedObj)
diff --git a/src/worker/execution-plugins/template.spec.ts b/src/worker/execution-plugins/template.spec.ts
index ccd6f2f..0f5549d 100644
--- a/src/worker/execution-plugins/template.spec.ts
+++ b/src/worker/execution-plugins/template.spec.ts
@@ -31,5 +31,12 @@ describe('execution-plugins :: template', () => {
         return expect(setObj.test).toEqual('34.56')
       })
     })
+
+    it('should reject in case there\'s a render problem', () => {
+      options.fields.test = '{{ amounts'
+      const objTransformer = new TemplatePlugin(action(options), '')
+
+      return expect(objTransformer.execute(msg)).rejects.toBeTruthy()
+    })
   })
 })
diff --git a/src/worker/execution-plugins/template.ts b/src/worker/execution-plugins/template.ts
index 503869b..bc3a7bd 100644
--- a/src/worker/execution-plugins/template.ts
+++ b/src/worker/execution-plugins/template.ts
@@ -24,13 +24,21 @@ export default class TemplatePlugin extends OperatorPlugin implements PluginExec
     )
 
     const fieldsTemplate = {}
-    Object.keys(this.options.fields).forEach((field) => {
-      fieldsTemplate[field] = nunjucks.renderString(this.options.fields[field], message)
-    })
+    try {
+      Object.keys(this.options.fields).forEach((field) => {
+        fieldsTemplate[field] = nunjucks.renderString(this.options.fields[field], message)
+      })
+    } catch (error) {
+      return Promise.reject(error)
+    }
 
-    const setTemplate = Object.assign({}, message, fieldsTemplate)
+    const setTemplate = Object.assign({
+      ...message,
+      ...fieldsTemplate
+    })
 
     logger.info(this.preLog, 'Template applied')
+
     return Promise.resolve(setTemplate)
   }
 }
diff --git a/test/operators-tester.spec.ts b/test/operators-tester.spec.ts
index 5c61fd7..efd166d 100644
--- a/test/operators-tester.spec.ts
+++ b/test/operators-tester.spec.ts
@@ -51,7 +51,12 @@ const executeActions = async (operator, {input, actions, response}) => {
 
         return retorn
       }).catch((err) => {
-        return Promise.resolve(err)
+        // This is due to how errored payloads are treaten... something that
+        // should be reviewed
+        if (err.action && err.action === 'abort') {
+          return Promise.resolve(err)
+        }
+        return Promise.reject(err)
       })
     }