diff --git a/src/logic/future_moves.rs b/src/logic/future_moves.rs
index e01519b..1590ede 100644
--- a/src/logic/future_moves.rs
+++ b/src/logic/future_moves.rs
@@ -519,7 +519,7 @@ impl FutureMoves {
                 return;
             }
 
-            // only prune moves of the agent
+            // only prune moves of the agent (children of opposite color)
             if indexes.first().map(|&i| self.arena[i].color) != Some(self.agent_color) {
                 continue;
             }