diff --git a/src/color/p5.Color.js b/src/color/p5.Color.js
index dfcd07a744..01b2c7fca5 100644
--- a/src/color/p5.Color.js
+++ b/src/color/p5.Color.js
@@ -705,7 +705,6 @@ p5.Color = class Color {
    * @param {Number} alpha the new alpha value.
    *
    * @example
-   * @example
    * <div>
    * <code>
    * function setup() {
diff --git a/src/math/random.js b/src/math/random.js
index 27916de222..f5d5568f9d 100644
--- a/src/math/random.js
+++ b/src/math/random.js
@@ -260,7 +260,6 @@ p5.prototype.randomSeed = function(seed) {
  * @method random
  * @param  {Array} choices   array to choose from.
  * @return {*} random element from the array.
- * @example
  */
 p5.prototype.random = function(min, max) {
   p5._validateParameters('random', arguments);
diff --git a/src/webgl/material.js b/src/webgl/material.js
index a503548227..cf87b4518b 100644
--- a/src/webgl/material.js
+++ b/src/webgl/material.js
@@ -2334,7 +2334,7 @@ p5.prototype.metalness = function (metallic) {
  * @param  {Number[]} color The currently set color, with values in 0-1 range
  * @param  {Boolean} [hasTransparency] Whether the shape being drawn has other
  * transparency internally, e.g. via vertex colors
- * @return {Number[]]}  Normalized numbers array
+ * @return {Number[]}  Normalized numbers array
  */
 p5.RendererGL.prototype._applyColorBlend = function(colors, hasTransparency) {
   const gl = this.GL;
diff --git a/src/webgl/p5.Quat.js b/src/webgl/p5.Quat.js
index 625595ccc0..23a7d9db7b 100644
--- a/src/webgl/p5.Quat.js
+++ b/src/webgl/p5.Quat.js
@@ -69,7 +69,6 @@ p5.Quat = class {
    * This was taken from the below stackexchange link
    * https://gamedev.stackexchange.com/questions/28395/rotating-vector3-by-a-quaternion/50545#50545
    * @param {p5.Vector} [p] vector to rotate on the axis quaternion
-   * @returns
    */
   rotateVector(p) {
     return new p5.Vector.mult( p, this.w*this.w - this.vec.dot(this.vec) )
diff --git a/src/webgl/p5.RendererGL.Immediate.js b/src/webgl/p5.RendererGL.Immediate.js
index 42e71fc115..47a656fa83 100644
--- a/src/webgl/p5.RendererGL.Immediate.js
+++ b/src/webgl/p5.RendererGL.Immediate.js
@@ -321,7 +321,7 @@ p5.RendererGL.prototype._processVertices = function(mode) {
  * Called from _processVertices(). This function calculates the stroke vertices for custom shapes and
  * tesselates shapes when applicable.
  * @private
- * @returns  {Array[Number]} indices for custom shape vertices indicating edges.
+ * @returns  {Number[]} indices for custom shape vertices indicating edges.
  */
 p5.RendererGL.prototype._calculateEdges = function(
   shapeMode,