diff --git a/curriculum/challenges/english/10-coding-interview-prep/data-structures/create-a-circular-queue.english.md b/curriculum/challenges/english/10-coding-interview-prep/data-structures/create-a-circular-queue.english.md
index a63c921902..753fbb5900 100644
--- a/curriculum/challenges/english/10-coding-interview-prep/data-structures/create-a-circular-queue.english.md
+++ b/curriculum/challenges/english/10-coding-interview-prep/data-structures/create-a-circular-queue.english.md
@@ -80,34 +80,34 @@ tests:
 
 ```js
 class CircularQueue {
-   constructor(size) {
+  constructor(size) {
 
-     this.queue = [];
-     this.read = 0;
-     this.write = 0;
-     this.max = size - 1;
+    this.queue = [];
+    this.read = 0;
+    this.write = 0;
+    this.max = size - 1;
 
-     while (size > 0) {
-        this.queue.push(null);
-        size--;
-     }
-   }
+    while (size > 0) {
+      this.queue.push(null);
+      size--;
+    }
+  }
 
-   print() {
-     return this.queue;
-   }
+  print() {
+    return this.queue;
+  }
 
-   enqueue(item) {
+  enqueue(item) {
     // Only change code below this line
 
     // Only change code above this line
-   }
+  }
 
-   dequeue() {
+  dequeue() {
     // Only change code below this line
 
     // Only change code above this line
-   }
+  }
 }
 ```
 
diff --git a/curriculum/challenges/english/10-coding-interview-prep/data-structures/create-a-priority-queue-class.english.md b/curriculum/challenges/english/10-coding-interview-prep/data-structures/create-a-priority-queue-class.english.md
index c2505cba63..6ad080dcd6 100644
--- a/curriculum/challenges/english/10-coding-interview-prep/data-structures/create-a-priority-queue-class.english.md
+++ b/curriculum/challenges/english/10-coding-interview-prep/data-structures/create-a-priority-queue-class.english.md
@@ -52,13 +52,13 @@ tests:
 
 ```js
 function PriorityQueue () {
-    this.collection = [];
-    this.printCollection = function() {
-      console.log(this.collection);
-    };
-    // Only change code below this line
+  this.collection = [];
+  this.printCollection = function() {
+    console.log(this.collection);
+  };
+  // Only change code below this line
 
-    // Only change code above this line
+  // Only change code above this line
 }
 ```
 
diff --git a/curriculum/challenges/english/10-coding-interview-prep/data-structures/remove-elements-from-a-linked-list-by-index.english.md b/curriculum/challenges/english/10-coding-interview-prep/data-structures/remove-elements-from-a-linked-list-by-index.english.md
index 0ac4136998..2806e7092a 100644
--- a/curriculum/challenges/english/10-coding-interview-prep/data-structures/remove-elements-from-a-linked-list-by-index.english.md
+++ b/curriculum/challenges/english/10-coding-interview-prep/data-structures/remove-elements-from-a-linked-list-by-index.english.md
@@ -69,15 +69,15 @@ function LinkedList() {
   this.add = function(element){
     var node = new Node(element);
     if(head === null){
-        head = node;
+      head = node;
     } else {
-        var currentNode = head;
+      var currentNode = head;
 
-        while(currentNode.next){
-            currentNode  = currentNode.next;
-        }
+      while(currentNode.next){
+        currentNode  = currentNode.next;
+      }
 
-        currentNode.next = node;
+      currentNode.next = node;
     }
 
     length++;
diff --git a/curriculum/challenges/english/10-coding-interview-prep/data-structures/remove-elements-from-a-linked-list.english.md b/curriculum/challenges/english/10-coding-interview-prep/data-structures/remove-elements-from-a-linked-list.english.md
index afa62cd4c1..6870719184 100644
--- a/curriculum/challenges/english/10-coding-interview-prep/data-structures/remove-elements-from-a-linked-list.english.md
+++ b/curriculum/challenges/english/10-coding-interview-prep/data-structures/remove-elements-from-a-linked-list.english.md
@@ -67,13 +67,13 @@ function LinkedList() {
     if(head === null){
         head = node;
     } else {
-        var currentNode = head;
+      var currentNode = head;
 
-        while(currentNode.next){
-            currentNode  = currentNode.next;
-        }
+      while(currentNode.next){
+        currentNode  = currentNode.next;
+      }
 
-        currentNode.next = node;
+      currentNode.next = node;
     }
 
     length++;
diff --git a/curriculum/challenges/english/10-coding-interview-prep/data-structures/search-within-a-linked-list.english.md b/curriculum/challenges/english/10-coding-interview-prep/data-structures/search-within-a-linked-list.english.md
index 1f559a6c06..c52d916820 100644
--- a/curriculum/challenges/english/10-coding-interview-prep/data-structures/search-within-a-linked-list.english.md
+++ b/curriculum/challenges/english/10-coding-interview-prep/data-structures/search-within-a-linked-list.english.md
@@ -74,13 +74,13 @@ function LinkedList() {
     if(head === null){
         head = node;
     } else {
-        var currentNode = head;
+      var currentNode = head;
 
-        while(currentNode.next){
-            currentNode  = currentNode.next;
-        }
+      while(currentNode.next){
+        currentNode = currentNode.next;
+      }
 
-        currentNode.next = node;
+      currentNode.next = node;
     }
 
     length++;
@@ -90,14 +90,14 @@ function LinkedList() {
     var currentNode = head;
     var previousNode;
     if(currentNode.element === element){
-        head = currentNode.next;
+      head = currentNode.next;
     } else {
-        while(currentNode.element !== element) {
-            previousNode = currentNode;
-            currentNode = currentNode.next;
-        }
+      while(currentNode.element !== element) {
+        previousNode = currentNode;
+        currentNode = currentNode.next;
+      }
 
-        previousNode.next = currentNode.next;
+      previousNode.next = currentNode.next;
     }
 
     length --;