diff --git a/vignettes/_translation_links.R b/vignettes/_translation_links.R
index 1506e3bed..324cf77c4 100644
--- a/vignettes/_translation_links.R
+++ b/vignettes/_translation_links.R
@@ -15,7 +15,7 @@
     transl_lang = ifelse(dirname(translation) == ".", "en", dirname(translation))
     block = if (length(which(transl_lang != lang))) {
       sprintf(
-	fmt, paste(collapse = " | ", sprintf(
+        fmt, paste(collapse = " | ", sprintf(
           "[%s](%s)",
           transl_lang[transl_lang != lang],
           file.path(url, sub("(?i)\\.Rmd$", ".html", translation[transl_lang != lang]))