diff --git a/src/config/configValidate.ts b/src/config/configValidate.ts
index 591e2d9ed..e6a65aa35 100644
--- a/src/config/configValidate.ts
+++ b/src/config/configValidate.ts
@@ -32,8 +32,8 @@ export function validateConfig(config: unknown): asserts config is RepopackConfi
       if (typeof style !== 'string') {
         throw new RepopackConfigValidationError('output.style must be a string');
       }
-      if (style !== 'plain' && style !== 'xml') {
-        throw new RepopackConfigValidationError('output.style must be either "plain" or "xml"');
+      if (style !== 'plain' && style !== 'xml' && style !== 'markdown') {
+        throw new RepopackConfigValidationError('output.style must be either "plain", "xml" or "markdown"');
       }
     }
   }
diff --git a/tests/config/configValidate.test.ts b/tests/config/configValidate.test.ts
index e6bd77988..08b77b112 100644
--- a/tests/config/configValidate.test.ts
+++ b/tests/config/configValidate.test.ts
@@ -46,6 +46,6 @@ describe('configValidate', () => {
   test('should throw for invalid output.style value', () => {
     const invalidConfig = { output: { style: 'invalid' } };
     expect(() => validateConfig(invalidConfig)).toThrow(RepopackConfigValidationError);
-    expect(() => validateConfig(invalidConfig)).toThrow('output.style must be either "plain" or "xml"');
+    expect(() => validateConfig(invalidConfig)).toThrow('output.style must be either "plain", "xml" or "markdown"');
   });
 });