diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc61cba71..842211c3d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@
 -   Add support for TypeScript 4.6, #1877.
 -   Support copying `@param` comments for nested members that target union and intersection types, #1876.
 
+### Bug Fixes
+
+-   Fixed validation for `--requiredToBeDocumented` option, #1872.
+
 ## v0.22.12 (2022-02-20)
 
 ### Features
diff --git a/src/lib/utils/options/sources/typedoc.ts b/src/lib/utils/options/sources/typedoc.ts
index 883b478da..039cfe4e9 100644
--- a/src/lib/utils/options/sources/typedoc.ts
+++ b/src/lib/utils/options/sources/typedoc.ts
@@ -354,7 +354,7 @@ export function addTypeDocOptions(options: Pick<Options, "addDeclaration">) {
             );
 
             for (const kind of values) {
-                if (validValues.includes(kind)) {
+                if (!validValues.includes(kind)) {
                     throw new Error(
                         `'${kind}' is an invalid value for 'requiredToBeDocumented'. Must be one of: ${validValues.join(
                             ", "
diff --git a/src/test/utils/options/default-options.test.ts b/src/test/utils/options/default-options.test.ts
index 0d8a25093..c7855ec3c 100644
--- a/src/test/utils/options/default-options.test.ts
+++ b/src/test/utils/options/default-options.test.ts
@@ -1,4 +1,4 @@
-import { ok, throws, strictEqual } from "assert";
+import { ok, throws, strictEqual, doesNotThrow } from "assert";
 import { BUNDLED_THEMES } from "shiki";
 import { Logger, Options } from "../../../lib/utils";
 
@@ -54,4 +54,18 @@ describe("Default Options", () => {
             throws(() => opts.setValue("markedOptions", []));
         });
     });
+
+    describe("requiredToBeDocumented", () => {
+        it("Works with valid values", () => {
+            doesNotThrow(() =>
+                opts.setValue("requiredToBeDocumented", ["Enum"])
+            );
+        });
+
+        it("Throws on invalid values", () => {
+            throws(() =>
+                opts.setValue("requiredToBeDocumented", ["Enum2" as never])
+            );
+        });
+    });
 });