diff --git a/content/3.defense-systems/rst_2tm_1tm_tir.md b/content/3.defense-systems/rst_2tm_1tm_tir.md
index 0d46247dd3d3a0b681ce90c101a14a08cff98db4..6f8617a2028551931a5eff60cf7db992bb91c1a1 100644
--- a/content/3.defense-systems/rst_2tm_1tm_tir.md
+++ b/content/3.defense-systems/rst_2tm_1tm_tir.md
@@ -90,7 +90,7 @@ end
     subgraph Title3[Expression species]
         Expressed_0
 end
-    subgraph Title4[Phage infected]
+    subgraph Title4[Protects against]
         Lambda
         LF82_P8
         P2