diff --git a/content/3.defense-systems/card_nlr.md b/content/3.defense-systems/card_nlr.md
index b42376f36b9e9002da109a8dde9ba08b3dde37e0..00fc59354c6f128d26ef006d468b258928cfaf7b 100644
--- a/content/3.defense-systems/card_nlr.md
+++ b/content/3.defense-systems/card_nlr.md
@@ -21,7 +21,7 @@ For the *Lysobacter* system, the effector has been described as a pore-formin pr
 
 ## Example of genomic structure
 
-## Struture
+## Structure
 
 ## Experimental validation