diff --git a/docs/index.html b/docs/index.html
index 1bc3dee16..eccb4f7d7 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -2,6 +2,7 @@
 <html>
 <head>
 <meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
 <title>uBlock Origin pages</title>
 </head>
 <body>
diff --git a/docs/tests/hnset-benchmark.html b/docs/tests/hnset-benchmark.html
index 26b56f931..eda502ae8 100644
--- a/docs/tests/hnset-benchmark.html
+++ b/docs/tests/hnset-benchmark.html
@@ -2,6 +2,7 @@
 <html>
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
 </head>
 <body style="font: 14px sans-serif">
 <h1>Benchmark of hostname-lookup data structures: Set, RegExp, HNTrie</h1>
diff --git a/docs/tests/hntrie-test.html b/docs/tests/hntrie-test.html
index 4edad4f97..e4c7114c6 100644
--- a/docs/tests/hntrie-test.html
+++ b/docs/tests/hntrie-test.html
@@ -2,6 +2,7 @@
 <html>
 <head>
 <meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
 </head>
 <body style="font: 14px sans-serif">
 <h1>HNTrie test</h1>
diff --git a/docs/tests/index.html b/docs/tests/index.html
index 2ffaa2429..347ec9eee 100644
--- a/docs/tests/index.html
+++ b/docs/tests/index.html
@@ -2,6 +2,7 @@
 <html>
 <head>
 <meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
 <title>uBlock Origin -- Tests</title>
 </head>
 <body>
