diff --git a/radix.go b/radix.go
index 3ba8379..c5287c3 100644
--- a/radix.go
+++ b/radix.go
@@ -149,7 +149,7 @@ func longestPrefix(k1, k2 string) int {
 }
 
 // Insert is used to add a newentry or update
-// an existing entry. Returns if updated.
+// an existing entry. Returns true if an existing record is updated.
 func (t *Tree) Insert(s string, v interface{}) (interface{}, bool) {
 	var parent *node
 	n := t.root
@@ -219,7 +219,7 @@ func (t *Tree) Insert(s string, v interface{}) (interface{}, bool) {
 			val: v,
 		}
 
-		// If the new key is a subset, add to to this node
+		// If the new key is a subset, add to this node
 		search = search[commonPrefix:]
 		if len(search) == 0 {
 			child.leaf = leaf