diff --git a/forge-ai/src/main/java/forge/ai/ability/FogAi.java b/forge-ai/src/main/java/forge/ai/ability/FogAi.java
index 9d919b10b22..72a4a2eaf91 100644
--- a/forge-ai/src/main/java/forge/ai/ability/FogAi.java
+++ b/forge-ai/src/main/java/forge/ai/ability/FogAi.java
@@ -113,6 +113,6 @@ public class FogAi extends SpellAbilityAi {
             chance = game.getPhaseHandler().getPhase().isAfter(PhaseType.COMBAT_DAMAGE);
         }
 
-        return chance;
+        return chance || mandatory;
     }
 }