diff --git a/theme.toml b/theme.toml
index af66fe3..7a1680a 100644
--- a/theme.toml
+++ b/theme.toml
@@ -4,7 +4,7 @@ licenselink = "https://github.com/shawnohare/hugo-tufte/blob/master/LICENSE.md"
 description = "A minimalist blog theme using Tufte-css."
 homepage = "http://github.com/shawnohare/hugo-tufte"
 tags = ["blog", "tufte", "minimal"]
-features = ["math", "tufte-css", "tufte"']
+features = ["math", "tufte-css", "tufte"]
 min_version = 0.15
 
 [author]