diff --git a/examples/full-screen.html b/examples/full-screen.html
index 58e19de6b6..f61977613c 100644
--- a/examples/full-screen.html
+++ b/examples/full-screen.html
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <html>
   <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
     <link rel="stylesheet" href="style.css" type="text/css">
     <style type="text/css">
diff --git a/examples/overlay-and-popup.html b/examples/overlay-and-popup.html
index c1d3c1983c..04521660c4 100644
--- a/examples/overlay-and-popup.html
+++ b/examples/overlay-and-popup.html
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <html>
   <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
     <link rel="stylesheet" href="style.css" type="text/css">
     <style type="text/css">
diff --git a/examples/side-by-side.html b/examples/side-by-side.html
index 49993e45e6..23bdb76baf 100644
--- a/examples/side-by-side.html
+++ b/examples/side-by-side.html
@@ -1,6 +1,7 @@
 <!doctype html>
 <html>
     <head>
+        <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
         <link rel="stylesheet" href="../css/ol.css" type="text/css">
         <link rel="stylesheet" href="style.css" type="text/css">
         <style type="text/css">
diff --git a/examples/two-layers.html b/examples/two-layers.html
index 2a7d80decf..e1f9c32258 100644
--- a/examples/two-layers.html
+++ b/examples/two-layers.html
@@ -1,6 +1,7 @@
 <!doctype html>
 <html>
     <head>
+        <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
         <link rel="stylesheet" href="../css/ol.css" type="text/css">
         <link rel="stylesheet" href="style.css" type="text/css">
         <style type="text/css">
