diff --git a/lib/LoggingEvent.js b/lib/LoggingEvent.js
index 4b90d00..60ce832 100644
--- a/lib/LoggingEvent.js
+++ b/lib/LoggingEvent.js
@@ -9,7 +9,7 @@ class LoggingEvent {
   /**
    * Models a logging event.
    * @constructor
-   * @param {String} categoryName name of category
+   * @param {string} categoryName name of category
    * @param {Log4js.Level} level level of message
    * @param {Array} data objects to log
    * @author Seth Chisamore
diff --git a/lib/appenders/noLogFilter.js b/lib/appenders/noLogFilter.js
index ebf5c18..aa0327a 100644
--- a/lib/appenders/noLogFilter.js
+++ b/lib/appenders/noLogFilter.js
@@ -4,8 +4,8 @@ const debug = require('debug')('log4js:noLogFilter');
 
 /**
  * The function removes empty or null regexp from the array
- * @param {Array<string>} regexp
- * @returns {Array<string>} a filtered string array with not empty or null regexp
+ * @param {string[]} regexp
+ * @returns {string[]} a filtered string array with not empty or null regexp
  */
 function removeNullOrEmptyRegexp(regexp) {
   const filtered = regexp.filter(el => ((el != null) && (el !== '')));
@@ -15,7 +15,7 @@ function removeNullOrEmptyRegexp(regexp) {
 /**
  * Returns a function that will exclude the events in case they match
  * with the regular expressions provided
- * @param {string | Array<string>} filters contains the regexp that will be used for the evaluation
+ * @param {(string|string[])} filters contains the regexp that will be used for the evaluation
  * @param {*} appender
  * @returns {function}
  */
diff --git a/lib/categories.js b/lib/categories.js
index 23583ac..b9bb8b1 100644
--- a/lib/categories.js
+++ b/lib/categories.js
@@ -10,8 +10,8 @@ const categories = new Map();
  * and level, if none is set on this category.
  * This is recursive, so each parent also gets loaded with inherited appenders.
  * Inheritance is blocked if a category has inherit=false
- * @param  {any} config
- * @param  {any} category the child category
+ * @param  {*} config
+ * @param  {*} category the child category
  * @param  {string} categoryName dotted path to category
  * @return {void}
  */
@@ -57,7 +57,7 @@ function inheritFromParent(config, category, categoryName) {
  * Walk all categories in the config, and pull down any configuration from parent to child.
  * This includes inherited appenders, and level, where level is not set.
  * Inheritance is skipped where a category has inherit=false.
- * @param  {any} config
+ * @param  {*} config
  */
 function addCategoryInheritance(config) {
   if (!config.categories) return;
diff --git a/lib/connect-logger.js b/lib/connect-logger.js
index fbd057b..a7c255f 100755
--- a/lib/connect-logger.js
+++ b/lib/connect-logger.js
@@ -14,7 +14,7 @@ const DEFAULT_FORMAT =
  * for the assemble_tokens function at low, to pass the tests.
  *
  * @param  {IncomingMessage} req
- * @return {String}
+ * @return {string}
  * @api private
  */
 function getUrl(req) {
@@ -111,9 +111,9 @@ function assembleTokens(req, res, customTokens) {
 /**
  * Return formatted log line.
  *
- * @param  {String} str
+ * @param  {string} str
  * @param {Array} tokens
- * @return {String}
+ * @return {string}
  * @api private
  */
 function format(str, tokens) {
@@ -126,7 +126,7 @@ function format(str, tokens) {
 /**
  * Return RegExp Object about nolog
  *
- * @param  {String|Array} nolog
+ * @param  {(string|Array)} nolog
  * @return {RegExp}
  * @api private
  *
diff --git a/lib/levels.js b/lib/levels.js
index d7ca362..80c346e 100644
--- a/lib/levels.js
+++ b/lib/levels.js
@@ -21,7 +21,7 @@ class Level {
 
   /**
    * converts given String to corresponding Level
-   * @param {Level|String} sArg -- String value of Level OR Log4js.Level
+   * @param {(Level|string)} sArg -- String value of Level OR Log4js.Level
    * @param {Level} [defaultLevel] -- default Level, if no String representation
    * @return {Level}
    */