diff --git a/src/main/java/com/uber/cadence/activity/ActivityOptions.java b/src/main/java/com/uber/cadence/activity/ActivityOptions.java
index 6a918c590..2c3e73617 100644
--- a/src/main/java/com/uber/cadence/activity/ActivityOptions.java
+++ b/src/main/java/com/uber/cadence/activity/ActivityOptions.java
@@ -155,7 +155,7 @@ public ActivityOptions validateAndBuildWithDefaults() {
       if (scheduleToCloseTimeout == null
           && (scheduleToStartTimeout == null || startToCloseTimeout == null)) {
         throw new IllegalStateException(
-            "Either ScheduleToClose or both ScheduleToStart and StarToClose "
+            "Either ScheduleToClose or both ScheduleToStart and StartToClose "
                 + "timeouts are required: ");
       }
       Duration scheduleToClose = scheduleToCloseTimeout;