diff --git a/src/Corporation/Corporation.tsx b/src/Corporation/Corporation.tsx
index 85b196a74..d4a434d20 100644
--- a/src/Corporation/Corporation.tsx
+++ b/src/Corporation/Corporation.tsx
@@ -45,6 +45,8 @@ export class Corporation {
   upgrades: number[];
   upgradeMultipliers: number[];
 
+  avgProfit = 0;
+
   state = new CorporationState();
 
   constructor(params: IParams = {}) {
@@ -106,6 +108,8 @@ export class Corporation {
           this.expenses = this.expenses + ind.lastCycleExpenses;
         });
         const profit = this.revenue - this.expenses;
+        this.avgProfit =
+          (this.avgProfit * (CorporationConstants.AvgProfitLength - 1) + profit) / CorporationConstants.AvgProfitLength;
         const cycleProfit = profit * (marketCycles * CorporationConstants.SecsPerMarketCycle);
         if (isNaN(this.funds) || this.funds === Infinity || this.funds === -Infinity) {
           dialogBoxCreate(
@@ -160,7 +164,7 @@ export class Corporation {
 
   determineValuation(): number {
     let val,
-      profit = this.revenue - this.expenses;
+      profit = this.avgProfit;
     if (this.public) {
       // Account for dividends
       if (this.dividendPercentage > 0) {
diff --git a/src/Corporation/data/Constants.ts b/src/Corporation/data/Constants.ts
index e6b5a749a..f2578454a 100644
--- a/src/Corporation/data/Constants.ts
+++ b/src/Corporation/data/Constants.ts
@@ -28,6 +28,7 @@ export const CorporationConstants: {
   AllMaterials: string[];
   FundingRoundShares: number[];
   FundingRoundMultiplier: number[];
+  AvgProfitLength: number;
 } = {
   INITIALSHARES: 1e9, //Total number of shares you have at your company
   SHARESPERPRICEUPDATE: 1e6, //When selling large number of shares, price is dynamically updated for every batch of this amount
@@ -83,4 +84,6 @@ export const CorporationConstants: {
   ],
   FundingRoundShares: [0.1, 0.35, 0.25, 0.2],
   FundingRoundMultiplier: [4, 3, 3, 2.5],
+
+  AvgProfitLength: 20,
 };
diff --git a/src/NetscriptFunctions/Singularity.ts b/src/NetscriptFunctions/Singularity.ts
index acd94e78d..8b86c8b8d 100644
--- a/src/NetscriptFunctions/Singularity.ts
+++ b/src/NetscriptFunctions/Singularity.ts
@@ -1342,6 +1342,7 @@ export function NetscriptSingularity(player: IPlayer, workerScript: WorkerScript
       (_nextBN: unknown, _callbackScript: unknown = ""): void => {
         const nextBN = _ctx.helper.number("nextBN", _nextBN);
         const callbackScript = _ctx.helper.string("callbackScript", _callbackScript);
+        _ctx.helper.checkSingularityAccess();
         enterBitNode(Router, true, player.bitNodeN, nextBN);
         if (callbackScript)
           setTimeout(() => {
@@ -1353,6 +1354,7 @@ export function NetscriptSingularity(player: IPlayer, workerScript: WorkerScript
       (_nextBN: unknown, _callbackScript: unknown = ""): void => {
         const nextBN = _ctx.helper.number("nextBN", _nextBN);
         const callbackScript = _ctx.helper.string("callbackScript", _callbackScript);
+        _ctx.helper.checkSingularityAccess();
 
         const hackingRequirements = (): boolean => {
           const wd = GetServer(SpecialServers.WorldDaemon);