diff --git a/src/NetscriptFunctions.ts b/src/NetscriptFunctions.ts
index edbdd89e3..bc108d71e 100644
--- a/src/NetscriptFunctions.ts
+++ b/src/NetscriptFunctions.ts
@@ -63,7 +63,7 @@ import { NetscriptGang } from "./NetscriptFunctions/Gang";
 import { NetscriptSleeve } from "./NetscriptFunctions/Sleeve";
 import { NetscriptExtra } from "./NetscriptFunctions/Extra";
 import { NetscriptHacknet } from "./NetscriptFunctions/Hacknet";
-import { NS as INS, Player as INetscriptPlayer } from "./ScriptEditor/NetscriptDefinitions";
+import { NS as INS, Player as INetscriptPlayer, SourceFileLvl } from "./ScriptEditor/NetscriptDefinitions";
 import { NetscriptBladeburner } from "./NetscriptFunctions/Bladeburner";
 import { NetscriptCodingContract } from "./NetscriptFunctions/CodingContract";
 import { NetscriptCorporation } from "./NetscriptFunctions/Corporation";
@@ -2150,14 +2150,14 @@ export function NetscriptFunctions(workerScript: WorkerScript): NS {
       updateDynamicRam("getFavorToDonate", getRamCost("getFavorToDonate"));
       return Math.floor(CONSTANTS.BaseFavorToDonate * BitNodeMultipliers.RepToDonateToFaction);
     },
-    getOwnedSourceFiles: function (): any {
+    getOwnedSourceFiles: function (): SourceFileLvl[] {
       helper.updateDynamicRam("getOwnedSourceFiles", getRamCost("getOwnedSourceFiles"));
-      const res = [];
+      const res: SourceFileLvl[] = [];
       for (let i = 0; i < Player.sourceFiles.length; ++i) {
         res.push({
           n: Player.sourceFiles[i].n,
           lvl: Player.sourceFiles[i].lvl,
-        });
+        } as SourceFileLvl);
       }
       return res;
     },