diff --git a/src/google/adk/evaluation/trajectory_evaluator.py b/src/google/adk/evaluation/trajectory_evaluator.py
index 1291045..260c465 100644
--- a/src/google/adk/evaluation/trajectory_evaluator.py
+++ b/src/google/adk/evaluation/trajectory_evaluator.py
@@ -115,7 +115,7 @@ class TrajectoryEvaluator(Evaluator):
     tool use trajectories. An exact match scores a 1, 0 otherwise. The final
     number is an average of these individual scores.
 
-    Value range: [0, 1], where 0 is means none of the too use entries aligned,
+    Value range: [0, 1], where 0 means none of the tool use entries aligned,
     and 1 would mean all of them aligned. Higher value is good.
 
     Args: