diff --git a/src/uas/UASInterface.h b/src/uas/UASInterface.h
index de0b2677e3cf8c017c1f61732e095d7af1e31b7b..6aa4d2fc34ed1a92c326ca075135e9ac13c4d3f5 100644
--- a/src/uas/UASInterface.h
+++ b/src/uas/UASInterface.h
@@ -546,7 +546,7 @@ signals:
 protected:
 
     // TIMEOUT CONSTANTS
-    static const unsigned int timeoutIntervalHeartbeat = 1500 * 1000; ///< Heartbeat timeout is 1.5 seconds
+    static const unsigned int timeoutIntervalHeartbeat = 3500 * 1000; ///< Heartbeat timeout is 2.5 seconds
 
 };