diff --git a/internal/loop/run.go b/internal/loop/run.go
index cee358529..d5b471ddf 100644
--- a/internal/loop/run.go
+++ b/internal/loop/run.go
@@ -114,7 +114,7 @@ func Run(g GraphicsContext, width, height int, scale float64, title string, fps
 	currentRunContext.lastFPSUpdated = n
 
 	lg := &loopGraphicsContext{currentRunContext, g}
-	if err := ui.CurrentUI().Run(width, height, scale, title, lg); err != nil {
+	if err := ui.Run(width, height, scale, title, lg); err != nil {
 		if _, ok := err.(*ui.RegularTermination); ok {
 			return nil
 		}
diff --git a/internal/ui/ui.go b/internal/ui/ui.go
index b788dd14d..7c7a570a5 100644
--- a/internal/ui/ui.go
+++ b/internal/ui/ui.go
@@ -19,10 +19,6 @@ type GraphicsContext interface {
 	Update() error
 }
 
-type UserInterface interface {
-	Run(width, height int, scale float64, title string, g GraphicsContext) error
-}
-
 type RegularTermination struct {
 }
 
diff --git a/internal/ui/ui_glfw.go b/internal/ui/ui_glfw.go
index 6f36a3c56..d7dfd5ed7 100644
--- a/internal/ui/ui_glfw.go
+++ b/internal/ui/ui_glfw.go
@@ -39,10 +39,6 @@ type userInterface struct {
 
 var currentUI *userInterface
 
-func CurrentUI() UserInterface {
-	return currentUI
-}
-
 func init() {
 	if err := initialize(); err != nil {
 		panic(err)
@@ -146,7 +142,8 @@ func ScreenScale() float64 {
 	return s
 }
 
-func (u *userInterface) Run(width, height int, scale float64, title string, g GraphicsContext) error {
+func Run(width, height int, scale float64, title string, g GraphicsContext) error {
+	u := currentUI
 	// GLContext must be created before setting the screen size, which requires
 	// swapping buffers.
 	var err error
diff --git a/internal/ui/ui_js.go b/internal/ui/ui_js.go
index 7ce7429bf..69509ee47 100644
--- a/internal/ui/ui_js.go
+++ b/internal/ui/ui_js.go
@@ -39,10 +39,6 @@ var currentUI = &userInterface{
 	windowFocus:     true,
 }
 
-func CurrentUI() UserInterface {
-	return currentUI
-}
-
 // NOTE: This returns true even when the browser is not active.
 func shown() bool {
 	return !js.Global.Get("document").Get("hidden").Bool()
@@ -262,7 +258,8 @@ func RunMainThreadLoop(ch <-chan error) error {
 	return <-ch
 }
 
-func (u *userInterface) Run(width, height int, scale float64, title string, g GraphicsContext) error {
+func Run(width, height int, scale float64, title string, g GraphicsContext) error {
+	u := currentUI
 	doc := js.Global.Get("document")
 	doc.Set("title", title)
 	u.setScreenSize(width, height, scale)
diff --git a/internal/ui/ui_mobile.go b/internal/ui/ui_mobile.go
index ebbd44a22..7ad596c02 100644
--- a/internal/ui/ui_mobile.go
+++ b/internal/ui/ui_mobile.go
@@ -60,11 +60,8 @@ var (
 	}
 )
 
-func CurrentUI() UserInterface {
-	return currentUI
-}
-
-func (u *userInterface) Run(width, height int, scale float64, title string, g GraphicsContext) error {
+func Run(width, height int, scale float64, title string, g GraphicsContext) error {
+	u := currentUI
 	u.width = width
 	u.height = height
 	u.scale = scale