diff --git a/packages/conventional-changelog-conventionalcommits/parser-opts.js b/packages/conventional-changelog-conventionalcommits/parser-opts.js
index 370bbab9f..1fb9ef058 100644
--- a/packages/conventional-changelog-conventionalcommits/parser-opts.js
+++ b/packages/conventional-changelog-conventionalcommits/parser-opts.js
@@ -1,6 +1,7 @@
 'use strict'
 
 module.exports = function (config) {
+  config = defaultConfig(config)
   return {
     headerPattern: /^(\w*)(?:\((.*)\))?!?: (.*)$/,
     breakingHeaderPattern: /^(\w*)(?:\((.*)\))?!: (.*)$/,
@@ -11,6 +12,14 @@ module.exports = function (config) {
     ],
     noteKeywords: [`BREAKING CHANGE`],
     revertPattern: /^revert:\s([\s\S]*?)\s*This reverts commit (\w*)\./,
-    revertCorrespondence: [`header`, `hash`]
+    revertCorrespondence: [`header`, `hash`],
+    issuePrefixes: config.issuePrefixes
   }
 }
+
+// merge user set configuration with default configuration.
+function defaultConfig (config) {
+  config = config || {}
+  config.issuePrefixes = config.issuePrefixes || ['#']
+  return config
+}