diff --git a/tree.go b/tree.go
index 8dbe73b7..b4a9769c 100644
--- a/tree.go
+++ b/tree.go
@@ -812,7 +812,7 @@ func groupKeys(keys keylist, depth byte) []keylist {
 }
 
 func (n *InternalNode) GetAndLoadForProof(key []byte, resolver NodeResolverFn) ([]byte, error) {
-	// Each internal node that is part of the proof needs to load all it's
+	// Each internal node that is part of the proof needs to load all its
 	// children since it's needed for proof openings.
 	childrenKey := make([]byte, n.depth+1)
 	copy(childrenKey, key[:n.depth])