diff --git a/README.md b/README.md
index 8a3e7d05e6..13d12c38db 100644
--- a/README.md
+++ b/README.md
@@ -73,4 +73,4 @@ If you use `nf-core tools` in your work, please cite the `nf-core` publication a
 >
 > Philip Ewels, Alexander Peltzer, Sven Fillinger, Harshil Patel, Johannes Alneberg, Andreas Wilm, Maxime Ulysse Garcia, Paolo Di Tommaso & Sven Nahnsen.
 >
-> _Nat Biotechnol._ 2020 Feb 13. doi: [10.1038/s41587-020-0439-x](https://dx.doi.org/10.1038/s41587-020-0439-x).
+> _Nat Biotechnol._ 2020 Feb 13. doi: [10.1038/s41587-020-0439-x](https://dx.doi.org/10.1038/s41587-020-0439-x)