diff --git a/src/librustdoc/html/render.rs b/src/librustdoc/html/render.rs
index 184d5b24d6e12..b48951d7593b6 100644
--- a/src/librustdoc/html/render.rs
+++ b/src/librustdoc/html/render.rs
@@ -893,14 +893,12 @@ themePicker.onblur = handleThemeButtonsBlur;
           static_files::fira_sans::MEDIUM)?;
     write(cx.dst.join("FiraSans-LICENSE.txt"),
           static_files::fira_sans::LICENSE)?;
-    write(cx.dst.join("Heuristica-Italic.woff"),
-          static_files::heuristica::ITALIC)?;
-    write(cx.dst.join("Heuristica-LICENSE.txt"),
-          static_files::heuristica::LICENSE)?;
-    write(cx.dst.join("SourceSerifPro-Regular.woff"),
+    write(cx.dst.join("SourceSerifPro-Regular.ttf.woff"),
           static_files::source_serif_pro::REGULAR)?;
-    write(cx.dst.join("SourceSerifPro-Bold.woff"),
+    write(cx.dst.join("SourceSerifPro-Bold.ttf.woff"),
           static_files::source_serif_pro::BOLD)?;
+    write(cx.dst.join("SourceSerifPro-It.ttf.woff"),
+          static_files::source_serif_pro::ITALIC)?;
     write(cx.dst.join("SourceSerifPro-LICENSE.txt"),
           static_files::source_serif_pro::LICENSE)?;
     write(cx.dst.join("SourceCodePro-Regular.woff"),
diff --git a/src/librustdoc/html/static_files.rs b/src/librustdoc/html/static_files.rs
index 47629d058e31a..f340590e5fe33 100644
--- a/src/librustdoc/html/static_files.rs
+++ b/src/librustdoc/html/static_files.rs
@@ -73,22 +73,17 @@ pub mod fira_sans {
     pub static LICENSE: &'static [u8] = include_bytes!("static/FiraSans-LICENSE.txt");
 }
 
-/// Files related to the Heuristica font.
-pub mod heuristica {
-    /// The file `Heuristica-Italic.woff`, the Italic variant of the Heuristica font.
-    pub static ITALIC: &'static [u8] = include_bytes!("static/Heuristica-Italic.woff");
-
-    /// The file `Heuristica-LICENSE.txt`, the license text for the Heuristica font.
-    pub static LICENSE: &'static [u8] = include_bytes!("static/Heuristica-LICENSE.txt");
-}
-
 /// Files related to the Source Serif Pro font.
 pub mod source_serif_pro {
-    /// The file `SourceSerifPro-Regular.woff`, the Regular variant of the Source Serif Pro font.
-    pub static REGULAR: &'static [u8] = include_bytes!("static/SourceSerifPro-Regular.woff");
+    /// The file `SourceSerifPro-Regular.ttf.woff`, the Regular variant of the Source Serif Pro
+    /// font.
+    pub static REGULAR: &'static [u8] = include_bytes!("static/SourceSerifPro-Regular.ttf.woff");
+
+    /// The file `SourceSerifPro-Bold.ttf.woff`, the Bold variant of the Source Serif Pro font.
+    pub static BOLD: &'static [u8] = include_bytes!("static/SourceSerifPro-Bold.ttf.woff");
 
-    /// The file `SourceSerifPro-Bold.woff`, the Bold variant of the Source Serif Pro font.
-    pub static BOLD: &'static [u8] = include_bytes!("static/SourceSerifPro-Bold.woff");
+    /// The file `SourceSerifPro-It.ttf.woff`, the Italic variant of the Source Serif Pro font.
+    pub static ITALIC: &'static [u8] = include_bytes!("static/SourceSerifPro-It.ttf.woff");
 
     /// The file `SourceSerifPro-LICENSE.txt`, the license text for the Source Serif Pro font.
     pub static LICENSE: &'static [u8] = include_bytes!("static/SourceSerifPro-LICENSE.txt");