diff --git a/Flow.go b/flow.go
similarity index 100%
rename from Flow.go
rename to flow.go
diff --git a/Parameter.go b/parameter.go
similarity index 100%
rename from Parameter.go
rename to parameter.go
diff --git a/Router.go b/router.go
similarity index 94%
rename from Router.go
rename to router.go
index 6e2b8c4..839fade 100644
--- a/Router.go
+++ b/router.go
@@ -12,7 +12,7 @@ type Router[T any] struct {
 	options Tree[T]
 }
 
-// Creates a new router containing trees for every HTTP method.
+// Create a new Router containing trees for every HTTP method.
 func New[T any]() *Router[T] {
 	return &Router[T]{}
 }
@@ -56,7 +56,7 @@ func (router *Router[T]) Map(transform func(T) T) {
 	router.options.Map(transform)
 }
 
-// Returns the tree by the given HTTP method.
+// Returns the tree of the given HTTP method.
 func (router *Router[T]) selectTree(method string) *Tree[T] {
 	switch method {
 	case "GET":
diff --git a/Tree.go b/tree.go
similarity index 100%
rename from Tree.go
rename to tree.go
diff --git a/TreeNode.go b/treeNode.go
similarity index 100%
rename from TreeNode.go
rename to treeNode.go