diff --git a/src/core/environment.js b/src/core/environment.js
index 20c099925b..8887f006b9 100644
--- a/src/core/environment.js
+++ b/src/core/environment.js
@@ -424,6 +424,7 @@ p5.prototype.windowHeight = getWindowHeight();
  * canvas or do any other adjustments to accommodate the new window size.
  *
  * @method windowResized
+ * @param {Object} [event] optional Event callback argument.
  * @example
  * <div class="norender"><code>
  * function setup() {
diff --git a/src/events/keyboard.js b/src/events/keyboard.js
index 3258abb9e7..afea779688 100644
--- a/src/events/keyboard.js
+++ b/src/events/keyboard.js
@@ -122,6 +122,7 @@ p5.prototype.keyCode = 0;
  * behavior for this event, add "return false" to the end of the method.
  *
  * @method keyPressed
+ * @param  {Object} [event] optional KeyboardEvent callback argument.
  * @example
  * <div>
  * <code>
@@ -194,6 +195,7 @@ p5.prototype._onkeydown = function(e) {
  * behavior for this event, add "return false" to the end of the method.
  *
  * @method keyReleased
+ * @param  {Object} [event] optional KeyboardEvent callback argument.
  * @example
  * <div>
  * <code>
@@ -253,6 +255,7 @@ p5.prototype._onkeyup = function(e) {
  * to the end of the method.
  *
  * @method keyTyped
+ * @param  {Object} [event] optional KeyboardEvent callback argument.
  * @example
  * <div>
  * <code>
diff --git a/src/utilities/conversion.js b/src/utilities/conversion.js
index 89c68bcda9..b640b4bd53 100644
--- a/src/utilities/conversion.js
+++ b/src/utilities/conversion.js
@@ -66,6 +66,7 @@ p5.prototype.float = function(str) {
 /**
  * @method int
  * @param {Array} ns                    values to parse
+ * @param {Integer}       [radix]
  * @return {Number[]}                   integer representation of values
  */
 p5.prototype.int = function(n, radix = 10) {