diff --git a/protobufjs/protobufjs.d.ts b/protobufjs/protobufjs.d.ts
index fac34be103..139a9b94c8 100644
--- a/protobufjs/protobufjs.d.ts
+++ b/protobufjs/protobufjs.d.ts
@@ -224,7 +224,7 @@ declare namespace ProtoBuf {
 
     export interface ProtoEnum {
         name: string;
-        values: ProtoEnumValue;
+        values: ProtoEnumValue[];
         options: {[key: string]: any};
     }