diff --git a/content/3.defense-systems/gaps2.md b/content/3.defense-systems/gaps2.md
index 851e50d3fb1f2f4a02abc35138c1125fc3d73b07..fbee69858b6c43a1fd989e0c0cb7d01886c83be2 100644
--- a/content/3.defense-systems/gaps2.md
+++ b/content/3.defense-systems/gaps2.md
@@ -21,7 +21,7 @@ GAPS2 is composed of a single protein with a DNA BRCT domains :ref{doi=10.4161/c
 
 ## Molecular mechanisms
 
-As far as we are aware, the molecular mechanism is unknown. .
+As far as we are aware, the molecular mechanism is unknown.
 
 ## Example of genomic structure