diff --git a/Source/Workshop/VesselWorkNet.cs b/Source/Workshop/VesselWorkNet.cs
index 66aab1e4..4f039961 100644
--- a/Source/Workshop/VesselWorkNet.cs
+++ b/Source/Workshop/VesselWorkNet.cs
@@ -279,6 +279,7 @@ void FixedUpdate ()
 			} else {
 				updateTimer = 10;
 				UpdateProductivity (forceProductivityUpdate);
+				forceProductivityUpdate = false;
 			}
 			if (protoSinks != null) {
 				if (CatchUpBacklog ()) {