diff --git a/Conversions/RgbHslConversion.js b/Conversions/RgbHslConversion.js
index 7e014f1318..d09fc76531 100644
--- a/Conversions/RgbHslConversion.js
+++ b/Conversions/RgbHslConversion.js
@@ -22,7 +22,8 @@ const rgbToHsl = (colorRgb) => {
     throw new Error('Input is not a valid RGB color.')
   }
 
-  let colorHsl = colorRgb
+  // Work on a copy so the caller's RGB array is not mutated
+  let colorHsl = colorRgb.slice()
 
   let red = Math.round(colorRgb[0])
   let green = Math.round(colorRgb[1])
diff --git a/Sorts/BogoSort.js b/Sorts/BogoSort.js
index eeb4f7feeb..2b6652fed2 100644
--- a/Sorts/BogoSort.js
+++ b/Sorts/BogoSort.js
@@ -12,14 +12,13 @@ export function isSorted(array) {
 }
 
 /**
- * Shuffles the given array randomly in place.
+ * Unbiased Fisher–Yates shuffle of the given array in place.
+ * Each permutation is equally likely.
  */
 function shuffle(array) {
-  for (let i = array.length - 1; i; i--) {
-    const m = Math.floor(Math.random() * i)
-    const n = array[i - 1]
-    array[i - 1] = array[m]
-    array[m] = n
+  for (let i = array.length - 1; i > 0; i--) {
+    const j = Math.floor(Math.random() * (i + 1))
+    ;[array[i], array[j]] = [array[j], array[i]]
   }
 }