diff --git a/src/lib/select/select.spec.ts b/src/lib/select/select.spec.ts
index 35a646ec885..55a43089a3b 100644
--- a/src/lib/select/select.spec.ts
+++ b/src/lib/select/select.spec.ts
@@ -281,7 +281,7 @@ describe('MdSelect', () => {
       trigger.click();
       fixture.detectChanges();
 
-      const option = overlayContainerElement.querySelector('md-option');
+      const option = overlayContainerElement.querySelector('md-option')!;
       const event = dispatchKeyboardEvent(option, 'keydown', SPACE);
 
       expect(event.defaultPrevented).toBe(true);
@@ -291,7 +291,7 @@ describe('MdSelect', () => {
       trigger.click();
       fixture.detectChanges();
 
-      const option = overlayContainerElement.querySelector('md-option');
+      const option = overlayContainerElement.querySelector('md-option')!;
       const event = dispatchKeyboardEvent(option, 'keydown', ENTER);
 
       expect(event.defaultPrevented).toBe(true);