diff --git a/src/js/assignJS.js b/src/js/assignJS.js
index 9f8e701f6d6ba6b9ed7ac6e343f8594d1724b950..c3435119cc4f1d35e285bc16a79a58b3c18422dc 100644
--- a/src/js/assignJS.js
+++ b/src/js/assignJS.js
@@ -398,6 +398,8 @@ window.removeJob = function removeJob(slave, assignment) {
 		return r;
 	}
 
+	slave.assignmentOld = "";
+
 	const idx = V.slaveIndices[slave.ID];
 
 	if (assignment === "Pit") {