diff --git a/src/algorithms/math/fibonacci/fibonacci.js b/src/algorithms/math/fibonacci/fibonacci.js
index f623e9ae..3230dfdd 100644
--- a/src/algorithms/math/fibonacci/fibonacci.js
+++ b/src/algorithms/math/fibonacci/fibonacci.js
@@ -1,4 +1,9 @@
-// Return a fibonacci sequence as an array
+/**
+ * Return a fibonacci sequence as an array.
+ *
+ * @param n
+ * @return {number[]}
+ */
 export default function fibonacci(n) {
   const fibSequence = [1];
 
diff --git a/src/algorithms/math/fibonacci/fibonacciNth.js b/src/algorithms/math/fibonacci/fibonacciNth.js
index c5d33928..76bbbe87 100644
--- a/src/algorithms/math/fibonacci/fibonacciNth.js
+++ b/src/algorithms/math/fibonacci/fibonacciNth.js
@@ -1,4 +1,9 @@
-// Calculate fibonacci number at specific position using Dynamic Programming approach.
+/**
+ * Calculate fibonacci number at specific position using Dynamic Programming approach.
+ *
+ * @param n
+ * @return {number}
+ */
 export default function fibonacciNth(n) {
   let currentValue = 1;
   let previousValue = 0;