diff --git a/internal/ui/ui_js.go b/internal/ui/ui_js.go
index cc04c461c..7d1a0143e 100644
--- a/internal/ui/ui_js.go
+++ b/internal/ui/ui_js.go
@@ -23,7 +23,7 @@ import (
 )
 
 func Now() int64 {
-	// time.Now() is not reliable until GopherJS suports performance.now().
+	// time.Now() is not reliable until GopherJS supports performance.now().
 	return int64(js.Global.Get("performance").Call("now").Float() * float64(time.Millisecond))
 }