diff --git a/src/easeljs/geom/Matrix2D.js b/src/easeljs/geom/Matrix2D.js
index 58a58b3f1..bcd47511e 100755
--- a/src/easeljs/geom/Matrix2D.js
+++ b/src/easeljs/geom/Matrix2D.js
@@ -332,7 +332,7 @@ this.createjs = this.createjs||{};
 	/**
 	 * Applies a clockwise rotation transformation to the matrix.
 	 * @method rotate
-	 * @param {Number} angle The angle to rotate by, in degrees. To use a value in radians, multiply it by `180/Math.PI`.
+	 * @param {Number} angle The angle to rotate by, in degrees. To use a value in radians, multiply it by `Math.PI/180`.
 	 * @return {Matrix2D} This matrix. Useful for chaining method calls.
 	 **/
 	p.rotate = function(angle) {
@@ -353,7 +353,7 @@ this.createjs = this.createjs||{};
 	/**
 	 * Applies a skew transformation to the matrix.
 	 * @method skew
-	 * @param {Number} skewX The amount to skew horizontally in degrees. To use a value in radians, multiply it by `180/Math.PI`.
+	 * @param {Number} skewX The amount to skew horizontally in degrees. To use a value in radians, multiply it by `Math.PI/180`.
 	 * @param {Number} skewY The amount to skew vertically in degrees.
 	 * @return {Matrix2D} This matrix. Useful for chaining method calls.
 	*/