diff --git a/CITATION.cff b/CITATION.cff
index d1193964..5bcb467e 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -16,7 +16,6 @@ authors:
       family-names: Muffato
       affiliation: Wellcome Sanger Institute
       orcid: "https://orcid.org/0000-0002-7860-3560"
-      affiliation: Wellcome Sanger Institute
     - given-names: Guoying
       family-names: Qi
       affiliation: Wellcome Sanger Institute