diff --git a/src/librustdoc/html/mod.rs b/src/librustdoc/html/mod.rs
index 403a9303c3ff0..4318be898ceb4 100644
--- a/src/librustdoc/html/mod.rs
+++ b/src/librustdoc/html/mod.rs
@@ -2,6 +2,7 @@ crate mod escape;
crate mod format;
crate mod highlight;
crate mod layout;
+// used by the error-index generator, so it needs to be public
pub mod markdown;
crate mod render;
crate mod sources;
diff --git a/src/librustdoc/lib.rs b/src/librustdoc/lib.rs
index c61cbf78f771a..53f891251f500 100644
--- a/src/librustdoc/lib.rs
+++ b/src/librustdoc/lib.rs
@@ -83,7 +83,8 @@ mod doctree;
mod error;
mod doctest;
mod fold;
-crate mod formats;
+mod formats;
+// used by the error-index generator, so it needs to be public
pub mod html;
mod json;
mod markdown;