diff --git a/http-string-parser/http-string-parser-tests.ts b/http-string-parser/http-string-parser-tests.ts
index 9c4116e5d7..db3686e712 100644
--- a/http-string-parser/http-string-parser-tests.ts
+++ b/http-string-parser/http-string-parser-tests.ts
@@ -38,5 +38,5 @@ function test_statusLine(): void {
 
 function test_headers(): void {
     var result: { [key: string]: string } =
-        parser.parseHeaders("Content-Type: text/html; charset=utf-8\r\nContent-Length: 256\r\n");
+        parser.parseHeaders(["Content-Type: text/html; charset=utf-8", "Content-Length: 256"]);
 }
\ No newline at end of file
diff --git a/http-string-parser/http-string-parser.d.ts b/http-string-parser/http-string-parser.d.ts
index 4239cd9df9..959d458dcd 100644
--- a/http-string-parser/http-string-parser.d.ts
+++ b/http-string-parser/http-string-parser.d.ts
@@ -34,5 +34,5 @@ declare module "http-string-parser" {
     export function parseResponse(responseString: string): ParseResponseResult;
     export function parseRequestLine(requestLineString: string): ParseRequestLineResult;
     export function parseStatusLine(statusLine: string): ParseStatusLineResult;
-    export function parseHeaders(headerLines: string): { [key: string]: string };
+    export function parseHeaders(headerLines: string[]): { [key: string]: string };
 }