diff --git a/lists/arraylist/arraylist.go b/lists/arraylist/arraylist.go
index cdcd2d9..34cee03 100644
--- a/lists/arraylist/arraylist.go
+++ b/lists/arraylist/arraylist.go
@@ -286,7 +286,7 @@ func (list *List) String() string {
 	return str
 }
 
-// Check that the index is withing bounds of the list
+// Check that the index is within bounds of the list
 func (list *List) withinRange(index int) bool {
 	return index >= 0 && index < list.size
 }
diff --git a/lists/doublylinkedlist/doublylinkedlist.go b/lists/doublylinkedlist/doublylinkedlist.go
index 73f7e59..1d50f09 100644
--- a/lists/doublylinkedlist/doublylinkedlist.go
+++ b/lists/doublylinkedlist/doublylinkedlist.go
@@ -418,7 +418,7 @@ func (list *List) String() string {
 	return str
 }
 
-// Check that the index is withing bounds of the list
+// Check that the index is within bounds of the list
 func (list *List) withinRange(index int) bool {
 	return index >= 0 && index < list.size
 }
diff --git a/lists/singlylinkedlist/singlylinkedlist.go b/lists/singlylinkedlist/singlylinkedlist.go
index e71a36f..7cd5efc 100644
--- a/lists/singlylinkedlist/singlylinkedlist.go
+++ b/lists/singlylinkedlist/singlylinkedlist.go
@@ -388,7 +388,7 @@ func (list *List) String() string {
 	return str
 }
 
-// Check that the index is withing bounds of the list
+// Check that the index is within bounds of the list
 func (list *List) withinRange(index int) bool {
 	return index >= 0 && index < list.size
 }
diff --git a/stacks/arraystack/arraystack.go b/stacks/arraystack/arraystack.go
index 2276957..466797f 100644
--- a/stacks/arraystack/arraystack.go
+++ b/stacks/arraystack/arraystack.go
@@ -137,7 +137,7 @@ func (stack *Stack) String() string {
 	return str
 }
 
-// Check that the index is withing bounds of the list
+// Check that the index is within bounds of the list
 func (stack *Stack) withinRange(index int) bool {
 	return index >= 0 && index < stack.list.Size()
 }
diff --git a/stacks/linkedliststack/linkedliststack.go b/stacks/linkedliststack/linkedliststack.go
index 551377e..71df93c 100644
--- a/stacks/linkedliststack/linkedliststack.go
+++ b/stacks/linkedliststack/linkedliststack.go
@@ -133,7 +133,7 @@ func (stack *Stack) String() string {
 	return str
 }
 
-// Check that the index is withing bounds of the list
+// Check that the index is within bounds of the list
 func (stack *Stack) withinRange(index int) bool {
 	return index >= 0 && index < stack.list.Size()
 }
diff --git a/trees/binaryheap/binaryheap.go b/trees/binaryheap/binaryheap.go
index 79e7ec5..3f1c759 100644
--- a/trees/binaryheap/binaryheap.go
+++ b/trees/binaryheap/binaryheap.go
@@ -192,7 +192,7 @@ func (heap *Heap) bubbleUp() {
 	}
 }
 
-// Check that the index is withing bounds of the list
+// Check that the index is within bounds of the list
 func (heap *Heap) withinRange(index int) bool {
 	return index >= 0 && index < heap.list.Size()
 }