diff --git a/vnc.html b/vnc.html
index e23e0038..549c6bec 100644
--- a/vnc.html
+++ b/vnc.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html class="noVNC_loading">
+<html lang="en" class="noVNC_loading">
 <head>
 
     <!--
diff --git a/vnc_lite.html b/vnc_lite.html
index 9a38439c..0b0374ca 100644
--- a/vnc_lite.html
+++ b/vnc_lite.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html lang="en">
 <head>
 
     <!--
