diff --git a/src/NetscriptFunctions.ts b/src/NetscriptFunctions.ts
index 2f746cbe3..65b2c0053 100644
--- a/src/NetscriptFunctions.ts
+++ b/src/NetscriptFunctions.ts
@@ -1564,7 +1564,11 @@ export const ns: InternalAPI<NSFull> = {
       total += script.scriptRef.onlineMoneyMade / script.scriptRef.onlineRunningTime;
     }
 
-    return [total, Player.scriptProdSinceLastAug / (Player.playtimeSinceLastAug / 1000)];
+    let incomeFromScriptsSinceLastAug = Player.scriptProdSinceLastAug / (Player.playtimeSinceLastAug / 1000);
+    if (!Number.isFinite(incomeFromScriptsSinceLastAug)) {
+      incomeFromScriptsSinceLastAug = 0;
+    }
+    return [total, incomeFromScriptsSinceLastAug];
   },
   getScriptIncome:
     (ctx) =>
diff --git a/src/Script/ScriptHelpers.ts b/src/Script/ScriptHelpers.ts
index 2001a4af8..0adfeedd6 100644
--- a/src/Script/ScriptHelpers.ts
+++ b/src/Script/ScriptHelpers.ts
@@ -58,8 +58,11 @@ export function scriptCalculateOfflineProduction(runningScript: RunningScript):
   const expGain = confidence * (runningScript.onlineExpGained / runningScript.onlineRunningTime) * timePassed;
   Player.gainHackingExp(expGain);
 
-  const moneyGain =
+  let moneyGain =
     (runningScript.onlineMoneyMade / Player.playtimeSinceLastAug) * timePassed * CONSTANTS.OfflineHackingIncome;
+  if (!Number.isFinite(moneyGain)) {
+    moneyGain = 0;
+  }
   // money is given to player during engine load
   Player.scriptProdSinceLastAug += moneyGain;
 
diff --git a/src/engine.tsx b/src/engine.tsx
index 20a89b460..10996bd2e 100644
--- a/src/engine.tsx
+++ b/src/engine.tsx
@@ -276,8 +276,11 @@ const Engine: {
       tryGeneratingRandomContract(timeOffline / CONSTANTS.MillisecondsPerTenMinutes);
 
       let offlineReputation = 0;
-      const offlineHackingIncome =
+      let offlineHackingIncome =
         (Player.moneySourceA.hacking / Player.playtimeSinceLastAug) * timeOffline * CONSTANTS.OfflineHackingIncome;
+      if (!Number.isFinite(offlineHackingIncome)) {
+        offlineHackingIncome = 0;
+      }
       Player.gainMoney(offlineHackingIncome, "hacking");
       // Process offline progress
 
diff --git a/src/ui/ActiveScripts/ScriptProduction.tsx b/src/ui/ActiveScripts/ScriptProduction.tsx
index 12d57fcbd..32ca9a658 100644
--- a/src/ui/ActiveScripts/ScriptProduction.tsx
+++ b/src/ui/ActiveScripts/ScriptProduction.tsx
@@ -30,7 +30,10 @@ const useStyles = makeStyles()((theme: Theme) => ({
 }));
 export function ScriptProduction(): React.ReactElement {
   const { classes } = useStyles();
-  const prodRateSinceLastAug = Player.scriptProdSinceLastAug / (Player.playtimeSinceLastAug / 1000);
+  let prodRateSinceLastAug = Player.scriptProdSinceLastAug / (Player.playtimeSinceLastAug / 1000);
+  if (!Number.isFinite(prodRateSinceLastAug)) {
+    prodRateSinceLastAug = 0;
+  }
 
   return (
     <Table size="small" classes={{ root: classes.size }}>