diff --git a/types/nodegit/nodegit-tests.ts b/types/nodegit/nodegit-tests.ts
index 465b5415b7..00d988d77f 100644
--- a/types/nodegit/nodegit-tests.ts
+++ b/types/nodegit/nodegit-tests.ts
@@ -51,3 +51,8 @@ const blameOptions = new Git.BlameOptions();
 Git.Branch.lookup(repo, "branch_name", Git.Branch.BRANCH.LOCAL).then((reference) => {
     // Use reference
 });
+
+const signature = Git.Signature.now("name", "email");
+signature.name();
+signature.email();
+signature.when();
diff --git a/types/nodegit/signature.d.ts b/types/nodegit/signature.d.ts
index 3e62110d0c..93e76fd64f 100644
--- a/types/nodegit/signature.d.ts
+++ b/types/nodegit/signature.d.ts
@@ -11,7 +11,7 @@ export class Signature {
 
     free(): void;
     toString(): string;
-    name: string;
-    email: string;
-    when: Time;
+    name(): string;
+    email(): string;
+    when(): Time;
 }