diff --git a/src/Constants.ts b/src/Constants.ts
index a37ce6bba..41d541061 100644
--- a/src/Constants.ts
+++ b/src/Constants.ts
@@ -120,7 +120,7 @@ export const CONSTANTS: {
   LatestUpdate: string;
 } = {
   VersionString: "1.6.4",
-  VersionNumber: 16,
+  VersionNumber: 17,
 
   // Speed (in ms) at which the main loop is updated
   _idleSpeed: 200,
diff --git a/src/SaveObject.tsx b/src/SaveObject.tsx
index 5367ad25c..d406b597b 100755
--- a/src/SaveObject.tsx
+++ b/src/SaveObject.tsx
@@ -414,6 +414,23 @@ function evaluateVersionCompatibility(ver: string | number): void {
         }
       }
     }
+
+    // Fix bugged NFG accumulation in owned augmentations
+    if (ver < 17) {
+      let ownedNFGs = [...Player.augmentations];
+      ownedNFGs = ownedNFGs.filter((aug) => aug.name === AugmentationNames.NeuroFluxGovernor);
+      const newNFG = new PlayerOwnedAugmentation(AugmentationNames.NeuroFluxGovernor);
+      newNFG.level = 0;
+
+      for (const nfg of ownedNFGs) {
+        newNFG.level += nfg.level;
+      }
+
+      Player.augmentations = [
+        ...Player.augmentations.filter((aug) => aug.name !== AugmentationNames.NeuroFluxGovernor),
+        newNFG,
+      ];
+    }
   }
 }