diff --git a/packages/docgen/src/types/item.ts b/packages/docgen/src/types/item.ts
index d8db85f23..a77d79733 100644
--- a/packages/docgen/src/types/item.ts
+++ b/packages/docgen/src/types/item.ts
@@ -6,8 +6,7 @@ export class DocumentedItem<T = DeclarationReflection | Item> {
 
 	public serialize(): unknown {
 		try {
-			this.serializer();
-			return;
+			return this.serializer();
 		} catch (error_) {
 			const error = error_ as Error;
 			error.message = `Error while serializing ${this.detailedName()}: ${error.message}`;
@@ -15,7 +14,7 @@ export class DocumentedItem<T = DeclarationReflection | Item> {
 		}
 	}
 
-	protected serializer() {
+	protected serializer(): unknown {
 		throw new Error("Method 'serializer()' must be implemented.");
 	}