diff --git a/guide/book.toml b/guide/book.toml
index 025efc0b2b..e38b7edf2c 100644
--- a/guide/book.toml
+++ b/guide/book.toml
@@ -28,3 +28,6 @@ heading-split-level = 2
 
 [output.html.redirect]
 "/format/config.html" = "configuration/index.html"
+
+[language.en]
+name = "English"
diff --git a/guide/src/404.md b/guide/src/en/404.md
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diff --git a/guide/src/README.md b/guide/src/en/README.md
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diff --git a/guide/src/SUMMARY.md b/guide/src/en/SUMMARY.md
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diff --git a/guide/src/cli/README.md b/guide/src/en/cli/README.md
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diff --git a/guide/src/for_developers/README.md b/guide/src/en/for_developers/README.md
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diff --git a/guide/src/for_developers/mdbook-wordcount/Cargo.toml b/guide/src/en/for_developers/mdbook-wordcount/Cargo.toml
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diff --git a/guide/src/for_developers/mdbook-wordcount/src/main.rs b/guide/src/en/for_developers/mdbook-wordcount/src/main.rs
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diff --git a/guide/src/format/README.md b/guide/src/en/format/README.md
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diff --git a/guide/src/format/configuration/README.md b/guide/src/en/format/configuration/README.md
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diff --git a/guide/src/format/configuration/environment-variables.md b/guide/src/en/format/configuration/environment-variables.md
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diff --git a/guide/src/format/configuration/general.md b/guide/src/en/format/configuration/general.md
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diff --git a/guide/src/format/example.rs b/guide/src/en/format/example.rs
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diff --git a/guide/src/format/mathjax.md b/guide/src/en/format/mathjax.md
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diff --git a/guide/src/format/mdbook.md b/guide/src/en/format/mdbook.md
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diff --git a/guide/src/format/theme/README.md b/guide/src/en/format/theme/README.md
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