diff --git a/resemble/resemble-tests.ts b/resemble/resemble-tests.ts
index d79637d47..163903fef 100644
--- a/resemble/resemble-tests.ts
+++ b/resemble/resemble-tests.ts
@@ -1,3 +1,5 @@
+/// <reference path="resemble.d.ts" />
+
 resemble.outputSettings({
   errorColor: {
     red: 255,
diff --git a/resemble/resemble.d.ts b/resemble/resemble.d.ts
index c10209e07..7d5ad27d1 100644
--- a/resemble/resemble.d.ts
+++ b/resemble/resemble.d.ts
@@ -45,16 +45,16 @@ declare module Resemble {
   interface ResembleComparisonResult {
     isSameDimensions: boolean;
     dimensionDifference: {
-      width: number,
-      height: number
+      width: number;
+      height: number;
     };
 
     getImageDataUrl(): string;
 
     misMatchPercentage: number;
     diffBounds: {
-      top: number,
-      left: number,
+      top: number;
+      left: number;
       bottom: number;
       right: number;
     };