diff --git a/src/NetscriptFunctions.js b/src/NetscriptFunctions.js
index cbc0c6162..5fef44888 100644
--- a/src/NetscriptFunctions.js
+++ b/src/NetscriptFunctions.js
@@ -1139,7 +1139,7 @@ function NetscriptFunctions(workerScript) {
                     var oldScript = destServer.scripts[i];
                     oldScript.code = sourceScript.code;
                     oldScript.ramUsage = sourceScript.ramUsage;
-                    oldScript.module.markUpdated();
+                    oldScript.markUpdated();
                     return true;
                 }
             }