diff --git a/TensionUniverse/BlackHole/Q102_home_bias_in_portfolios.md b/TensionUniverse/BlackHole/Q102_home_bias_in_portfolios.md
index 5781ae13..68d6223c 100644
--- a/TensionUniverse/BlackHole/Q102_home_bias_in_portfolios.md
+++ b/TensionUniverse/BlackHole/Q102_home_bias_in_portfolios.md
@@ -1158,6 +1158,7 @@ This page should be read together with the following charters:
 * [TU Effective Layer Charter](../Charters/TU_EFFECTIVE_LAYER_CHARTER.md)
 * [TU Encoding and Fairness Charter](../Charters/TU_ENCODING_AND_FAIRNESS_CHARTER.md)
 * [TU Tension Scale Charter](../Charters/TU_TENSION_SCALE_CHARTER.md)
+* [TU Global Guardrails](../Charters/TU_GLOBAL_GUARDRAILS.md)
 
 These charters provide the global rules for: