diff --git a/codes/classical/q-ary_digits/ag/rs/reed_solomon.yml b/codes/classical/q-ary_digits/ag/rs/reed_solomon.yml
index 33d86d57d..a10f2319d 100644
--- a/codes/classical/q-ary_digits/ag/rs/reed_solomon.yml
+++ b/codes/classical/q-ary_digits/ag/rs/reed_solomon.yml
@@ -84,7 +84,7 @@ relations:
     - code_id: tamo_barg
       detail: 'Tamo-Barg codes reduce to RS codes when \(r=k\).'
     - code_id: dna
-      detail: 'RS codes have been used for DNA storage \cite{doi:10.1002/anie.201411378'
+      detail: 'RS codes have been used for DNA storage \cite{doi:10.1002/anie.201411378}.'
   cousins:
     - code_id: mds
       detail: 'RS codes have distance \(n-k+1\), saturating the Singleton bound.