diff --git a/src/function/probability/gamma.js b/src/function/probability/gamma.js
index f1beffa78..ffe75ecff 100644
--- a/src/function/probability/gamma.js
+++ b/src/function/probability/gamma.js
@@ -145,7 +145,6 @@ function factory (type, config, load, typed) {
    * @returns {BigNumber} Returns the factorial of n
    */
 
-
   function bigFactorial (n) {
     if (n.isZero()) {
       return new type.BigNumber(1) // 0! is per definition 1
diff --git a/src/function/probability/permutations.js b/src/function/probability/permutations.js
index 4f02681c5..a5d9f497a 100644
--- a/src/function/probability/permutations.js
+++ b/src/function/probability/permutations.js
@@ -32,9 +32,7 @@ function factory (type, config, load, typed) {
    */
   const permutations = typed('permutations', {
     'number | BigNumber': factorial,
-
     'number, number': function (n, k) {
-
       if (!isInteger(n) || n < 0) {
         throw new TypeError('Positive integer value expected in function permutations')
       }
@@ -44,7 +42,6 @@ function factory (type, config, load, typed) {
       if (k > n) {
         throw new TypeError('second argument k must be less than or equal to first argument n')
       }
-
       // Permute n objects, k at a time
       return product((n - k) + 1, n)
     },
diff --git a/src/function/probability/productrange.js b/src/function/probability/productrange.js
index e57e70bcb..a775c80c9 100644
--- a/src/function/probability/productrange.js
+++ b/src/function/probability/productrange.js
@@ -1,14 +1,14 @@
 
 function product (i, n) {
-    let half
-    if (n < i) {
-      return 1
-    }
-    if (n === i) {
-      return n
-    }
-    half =  ((n + i) / 2 ) | 0
-    return product(i, half) * product(half + 1, n)
+  let half
+  if (n < i) {
+    return 1
+  }
+  if (n === i) {
+    return n
+  }
+  half = ((n + i) / 2) | 0
+  return product(i, half) * product(half + 1, n)
 }
 
-module.exports = product
\ No newline at end of file
+module.exports = product