diff --git a/components/rebuild/src/lib.rs b/components/rebuild/src/lib.rs
index ddc9668b..7e43166f 100644
--- a/components/rebuild/src/lib.rs
+++ b/components/rebuild/src/lib.rs
@@ -297,9 +297,15 @@ pub fn after_content_change(site: &mut Site, path: &Path) -> Result<()> {
     let is_md = path.extension().unwrap() == "md";
     let index = path.parent().unwrap().join("index.md");
 
+    let mut potential_indices = vec![path.parent().unwrap().join("index.md")];
+    for language in &site.config.languages {
+        potential_indices.push(path.parent().unwrap().join(format!("index.{}.md", language.code)));
+    }
+    let colocated_index = potential_indices.contains(&path.to_path_buf());
+
     // A few situations can happen:
     // 1. Change on .md files
-    //    a. Is there an `index.md`? Return an error if it's something other than delete
+    //    a. Is there already an `index.md`? Return an error if it's something other than delete
     //    b. Deleted? remove the element
     //    c. Edited?
     //       1. filename is `_index.md`, this is a section
@@ -315,9 +321,9 @@ pub fn after_content_change(site: &mut Site, path: &Path) -> Result<()> {
         }
 
         // Added another .md in a assets directory
-        if index.exists() && path.exists() && path != index {
+        if index.exists() && path.exists() && !colocated_index {
             bail!(
-                "Change on {:?} detected but there is already an `index.md` in the same folder",
+                "Change on {:?} detected but only files named `index.md` with an optional language code are allowed",
                 path.display()
             );
         } else if index.exists() && !path.exists() {
diff --git a/components/rebuild/tests/rebuild.rs b/components/rebuild/tests/rebuild.rs
index b5a96ea0..9e84bdbf 100644
--- a/components/rebuild/tests/rebuild.rs
+++ b/components/rebuild/tests/rebuild.rs
@@ -16,15 +16,15 @@ use rebuild::{after_content_change, after_content_rename};
 // Loads the test_site in a tempdir and build it there
 // Returns (site_path_in_tempdir, site)
 macro_rules! load_and_build_site {
-    ($tmp_dir: expr) => {{
+    ($tmp_dir: expr, $site: expr) => {{
         let mut path =
             env::current_dir().unwrap().parent().unwrap().parent().unwrap().to_path_buf();
-        path.push("test_site");
+        path.push($site);
         let mut options = dir::CopyOptions::new();
         options.copy_inside = true;
         dir::copy(&path, &$tmp_dir, &options).unwrap();
 
-        let site_path = $tmp_dir.path().join("test_site");
+        let site_path = $tmp_dir.path().join($site);
         let mut site = Site::new(&site_path, "config.toml").unwrap();
         site.load().unwrap();
         let public = &site_path.join("public");
@@ -81,7 +81,7 @@ macro_rules! rename {
 #[test]
 fn can_rebuild_after_simple_change_to_page_content() {
     let tmp_dir = tempdir().expect("create temp dir");
-    let (site_path, mut site) = load_and_build_site!(tmp_dir);
+    let (site_path, mut site) = load_and_build_site!(tmp_dir, "test_site");
     let file_path = edit_file!(
         site_path,
         "content/rebuild/first.md",
@@ -103,7 +103,7 @@ Some content"#
 #[test]
 fn can_rebuild_after_title_change_page_global_func_usage() {
     let tmp_dir = tempdir().expect("create temp dir");
-    let (site_path, mut site) = load_and_build_site!(tmp_dir);
+    let (site_path, mut site) = load_and_build_site!(tmp_dir, "test_site");
     let file_path = edit_file!(
         site_path,
         "content/rebuild/first.md",
@@ -125,7 +125,7 @@ date = 2017-01-01
 #[test]
 fn can_rebuild_after_sort_change_in_section() {
     let tmp_dir = tempdir().expect("create temp dir");
-    let (site_path, mut site) = load_and_build_site!(tmp_dir);
+    let (site_path, mut site) = load_and_build_site!(tmp_dir, "test_site");
     let file_path = edit_file!(
         site_path,
         "content/rebuild/_index.md",
@@ -150,7 +150,7 @@ template = "rebuild.html"
 #[test]
 fn can_rebuild_after_transparent_change() {
     let tmp_dir = tempdir().expect("create temp dir");
-    let (site_path, mut site) = load_and_build_site!(tmp_dir);
+    let (site_path, mut site) = load_and_build_site!(tmp_dir, "test_site");
     let file_path = edit_file!(
         site_path,
         "content/posts/2018/_index.md",
@@ -182,7 +182,7 @@ insert_anchor_links = "left"
 #[test]
 fn can_rebuild_after_renaming_page() {
     let tmp_dir = tempdir().expect("create temp dir");
-    let (site_path, mut site) = load_and_build_site!(tmp_dir);
+    let (site_path, mut site) = load_and_build_site!(tmp_dir, "test_site");
     let (old_path, new_path) = rename!(site_path, "content/posts/simple.md", "hard.md");
 
     let res = after_content_rename(&mut site, &old_path, &new_path);
@@ -195,7 +195,7 @@ fn can_rebuild_after_renaming_page() {
 #[test]
 fn can_rebuild_after_renaming_colocated_asset_folder() {
     let tmp_dir = tempdir().expect("create temp dir");
-    let (site_path, mut site) = load_and_build_site!(tmp_dir);
+    let (site_path, mut site) = load_and_build_site!(tmp_dir, "test_site");
     let (old_path, new_path) =
         rename!(site_path, "content/posts/with-assets", "with-assets-updated");
     assert!(file_contains!(site_path, "content/posts/with-assets-updated/index.md", "Hello"));
@@ -214,7 +214,7 @@ fn can_rebuild_after_renaming_colocated_asset_folder() {
 #[test]
 fn can_rebuild_after_renaming_section_folder() {
     let tmp_dir = tempdir().expect("create temp dir");
-    let (site_path, mut site) = load_and_build_site!(tmp_dir);
+    let (site_path, mut site) = load_and_build_site!(tmp_dir, "test_site");
     let (old_path, new_path) = rename!(site_path, "content/posts", "new-posts");
     assert!(file_contains!(site_path, "content/new-posts/simple.md", "simple"));
 
@@ -227,7 +227,7 @@ fn can_rebuild_after_renaming_section_folder() {
 #[test]
 fn can_rebuild_after_renaming_non_md_asset_in_colocated_folder() {
     let tmp_dir = tempdir().expect("create temp dir");
-    let (site_path, mut site) = load_and_build_site!(tmp_dir);
+    let (site_path, mut site) = load_and_build_site!(tmp_dir, "test_site");
     let (old_path, new_path) =
         rename!(site_path, "content/posts/with-assets/zola.png", "gutenberg.png");
 
@@ -239,7 +239,7 @@ fn can_rebuild_after_renaming_non_md_asset_in_colocated_folder() {
 #[test]
 fn can_rebuild_after_deleting_file() {
     let tmp_dir = tempdir().expect("create temp dir");
-    let (site_path, mut site) = load_and_build_site!(tmp_dir);
+    let (site_path, mut site) = load_and_build_site!(tmp_dir, "test_site");
     let path = site_path.join("content").join("posts").join("fixed-slug.md");
     fs::remove_file(&path).unwrap();
 
@@ -247,3 +247,29 @@ fn can_rebuild_after_deleting_file() {
     println!("{:?}", res);
     assert!(res.is_ok());
 }
+
+#[test]
+fn can_rebuild_after_editing_in_colocated_asset_folder_with_language() {
+    let tmp_dir = tempdir().expect("create temp dir");
+    let (site_path, mut site) = load_and_build_site!(tmp_dir, "test_site_i18n");
+    let file_path = edit_file!(
+        site_path,
+        "content/blog/with-assets/index.fr.md",
+        br#"
++++
+date = 2018-11-11
++++
+
+Edite
+"#
+    );
+
+    let res = after_content_change(&mut site, &file_path);
+    println!("{:?}", res);
+    assert!(res.is_ok());
+    assert!(file_contains!(
+        site_path,
+        "public/fr/blog/with-assets/index.html",
+        "Edite"
+    ));
+}
diff --git a/test_site_i18n/content/blog/fixed-slug.fr.md b/test_site_i18n/content/blog/fixed-slug.fr.md
index 9a2ba328..c9732a8a 100644
--- a/test_site_i18n/content/blog/fixed-slug.fr.md
+++ b/test_site_i18n/content/blog/fixed-slug.fr.md
@@ -1,5 +1,5 @@
 +++
-title = "Un slug fix"
+title = "Un slug fixe"
 slug = "something-else"
 date = 2017-01-01
 +++
diff --git a/test_site_i18n/templates/page.html b/test_site_i18n/templates/page.html
new file mode 100644
index 00000000..ae69e06e
--- /dev/null
+++ b/test_site_i18n/templates/page.html
@@ -0,0 +1,2 @@
+{{page.title}}
+{{page.content | safe}}