diff --git a/markdown/bitburner.resetinfo.md b/markdown/bitburner.resetinfo.md
index 6fc4b31f3..023835a03 100644
--- a/markdown/bitburner.resetinfo.md
+++ b/markdown/bitburner.resetinfo.md
@@ -21,5 +21,5 @@ interface ResetInfo
 |  [lastAugReset](./bitburner.resetinfo.lastaugreset.md) |  | number | Numeric timestamp (from Date.now()) of last augmentation reset |
 |  [lastNodeReset](./bitburner.resetinfo.lastnodereset.md) |  | number | Numeric timestamp (from Date.now()) of last BitNode reset |
 |  [ownedAugs](./bitburner.resetinfo.ownedaugs.md) |  | Map<string, number> | A map of owned augmentations to their levels. Keyed by the augmentation name. Map values are the augmentation level (e.g. for NeuroFlux governor). |
-|  [ownedSF](./bitburner.resetinfo.ownedsf.md) |  | Map<number, number> | A map of owned SF to their levels. Keyed by the SF number. Map values are the SF level. |
+|  [ownedSF](./bitburner.resetinfo.ownedsf.md) |  | Map&lt;number, number&gt; | <p>A map of owned source files. Its keys are the SF numbers. Its values are the active SF levels. This map takes BitNode options into account.</p><p>For example, let's say you have SF 1.3, but you overrode the active level of SF1 and set it to level 1. In this case, this map contains this entry: Key: 1 =<!-- -->&gt; Value: 1.</p><p>If the active level of a source file is 0, that source file won't be included in the result.</p> |
 
diff --git a/markdown/bitburner.resetinfo.ownedsf.md b/markdown/bitburner.resetinfo.ownedsf.md
index f22e0d8bb..4d9358e4c 100644
--- a/markdown/bitburner.resetinfo.ownedsf.md
+++ b/markdown/bitburner.resetinfo.ownedsf.md
@@ -4,7 +4,11 @@
 
 ## ResetInfo.ownedSF property
 
-A map of owned SF to their levels. Keyed by the SF number. Map values are the SF level.
+A map of owned source files. Its keys are the SF numbers. Its values are the active SF levels. This map takes BitNode options into account.
+
+For example, let's say you have SF 1.3, but you overrode the active level of SF1 and set it to level 1. In this case, this map contains this entry: Key: 1 =<!-- -->&gt; Value: 1.
+
+If the active level of a source file is 0, that source file won't be included in the result.
 
 **Signature:**
 
diff --git a/markdown/bitburner.singularity.getownedsourcefiles.md b/markdown/bitburner.singularity.getownedsourcefiles.md
index 7613cd881..61baf7429 100644
--- a/markdown/bitburner.singularity.getownedsourcefiles.md
+++ b/markdown/bitburner.singularity.getownedsourcefiles.md
@@ -21,5 +21,9 @@ Array containing an object with number and level of the source file.
 
 RAM cost: 5 GB
 
-Returns an array of source files
+Returns an array of source files. This function takes BitNode options into account.
+
+For example, let's say you have SF 1.3, but you overrode the active level of SF1 and set it to level 1. In this case, this function returns {<!-- -->"n":1,"lvl":1<!-- -->}<!-- -->.
+
+If the active level of a source file is 0, that source file won't be included in the result.
 
diff --git a/src/NetscriptFunctions.ts b/src/NetscriptFunctions.ts
index 11f8fcd75..ecc4593be 100644
--- a/src/NetscriptFunctions.ts
+++ b/src/NetscriptFunctions.ts
@@ -1825,7 +1825,11 @@ export const ns: InternalAPI<NSFull> = {
     lastNodeReset: Player.lastNodeReset,
     currentNode: Player.bitNodeN,
     ownedAugs: new Map(Player.augmentations.map((aug) => [aug.name, aug.level])),
-    ownedSF: new Map(Player.sourceFiles),
+    ownedSF: new Map(
+      [...Player.activeSourceFiles].filter(([__, activeLevel]) => {
+        return activeLevel > 0;
+      }),
+    ),
     bitNodeOptions: {
       ...Player.bitNodeOptions,
       sourceFileOverrides: new Map(Player.bitNodeOptions.sourceFileOverrides),
diff --git a/src/NetscriptFunctions/Singularity.ts b/src/NetscriptFunctions/Singularity.ts
index c66f5291d..3f1dda057 100644
--- a/src/NetscriptFunctions/Singularity.ts
+++ b/src/NetscriptFunctions/Singularity.ts
@@ -88,7 +88,13 @@ export function NetscriptSingularity(): InternalAPI<ISingularity> {
       }
       return res;
     },
-    getOwnedSourceFiles: () => () => [...Player.sourceFiles].map(([n, lvl]) => ({ n, lvl })),
+    getOwnedSourceFiles: () => () => {
+      return [...Player.activeSourceFiles]
+        .filter(([__, activeLevel]) => {
+          return activeLevel > 0;
+        })
+        .map(([n, lvl]) => ({ n, lvl }));
+    },
     getAugmentationFactions: (ctx) => (_augName) => {
       helpers.checkSingularityAccess(ctx);
       const augName = getEnumHelper("AugmentationName").nsGetMember(ctx, _augName);
diff --git a/src/ScriptEditor/NetscriptDefinitions.d.ts b/src/ScriptEditor/NetscriptDefinitions.d.ts
index 17784864a..b49a1e460 100644
--- a/src/ScriptEditor/NetscriptDefinitions.d.ts
+++ b/src/ScriptEditor/NetscriptDefinitions.d.ts
@@ -74,7 +74,15 @@ interface ResetInfo {
   currentNode: number;
   /** A map of owned augmentations to their levels. Keyed by the augmentation name. Map values are the augmentation level (e.g. for NeuroFlux governor). */
   ownedAugs: Map<string, number>;
-  /** A map of owned SF to their levels. Keyed by the SF number. Map values are the SF level. */
+  /**
+   * A map of owned source files. Its keys are the SF numbers. Its values are the active SF levels. This map takes
+   * BitNode options into account.
+   *
+   * For example, let's say you have SF 1.3, but you overrode the active level of SF1 and set it to level 1. In this
+   * case, this map contains this entry: Key: 1 => Value: 1.
+   *
+   * If the active level of a source file is 0, that source file won't be included in the result.
+   */
   ownedSF: Map<number, number>;
   /** Current BitNode options */
   bitNodeOptions: BitNodeOptions;
@@ -2435,7 +2443,12 @@ export interface Singularity {
    * RAM cost: 5 GB
    *
    *
-   * Returns an array of source files
+   * Returns an array of source files. This function takes BitNode options into account.
+   *
+   * For example, let's say you have SF 1.3, but you overrode the active level of SF1 and set it to level 1. In this
+   * case, this function returns {"n":1,"lvl":1}.
+   *
+   * If the active level of a source file is 0, that source file won't be included in the result.
    *
    * @returns Array containing an object with number and level of the source file.
    */