diff --git a/src/MissionManager/PlanManager.h b/src/MissionManager/PlanManager.h
index caa6173a084ba5e50cdc5f5d9523a457fb0cc0e5..0cfb50905eb78becc8a9ed855ad623c98d9b3ded 100644
--- a/src/MissionManager/PlanManager.h
+++ b/src/MissionManager/PlanManager.h
@@ -71,7 +71,7 @@ public:
 
     // These values are public so the unit test can set appropriate signal wait times
     // When passively waiting for a mission process, use a longer timeout.
-    static const int _ackTimeoutMilliseconds = 1000;
+    static const int _ackTimeoutMilliseconds = 1500;
     // When actively retrying to request mission items, use a shorter timeout instead.
     static const int _retryTimeoutMilliseconds = 250;
     static const int _maxRetryCount = 5;