diff --git a/src/lib/core/overlay/position/global-position-strategy.spec.ts b/src/lib/core/overlay/position/global-position-strategy.spec.ts
index 60508e724b90..acd0dc0f97e9 100644
--- a/src/lib/core/overlay/position/global-position-strategy.spec.ts
+++ b/src/lib/core/overlay/position/global-position-strategy.spec.ts
@@ -163,8 +163,8 @@ describe('GlobalPositonStrategy', () => {
 
     flushMicrotasks();
 
-    expect(element.style.left).toBe('0px');
-    expect(element.style.transform).toBe('');
+    expect(element.style.marginLeft).toBe('0px');
+    expect((element.parentNode as HTMLElement).style.justifyContent).toBe('flex-start');
   }));
 
   it('should reset the vertical position and offset when the height is 100%', fakeAsync(() => {
@@ -172,8 +172,8 @@ describe('GlobalPositonStrategy', () => {
 
     flushMicrotasks();
 
-    expect(element.style.top).toBe('0px');
-    expect(element.style.transform).toBe('');
+    expect(element.style.marginTop).toBe('0px');
+    expect((element.parentNode as HTMLElement).style.alignItems).toBe('flex-start');
   }));
 });
 
diff --git a/src/lib/dialog/dialog.spec.ts b/src/lib/dialog/dialog.spec.ts
index 6d2a43466ded..7b797627541e 100644
--- a/src/lib/dialog/dialog.spec.ts
+++ b/src/lib/dialog/dialog.spec.ts
@@ -169,7 +169,7 @@ describe('MdDialog', () => {
 
     let overlayPane = overlayContainerElement.querySelector('.md-overlay-pane') as HTMLElement;
 
-    expect(overlayPane.style.top).toBe('100px');
+    expect(overlayPane.style.marginTop).toBe('100px');
   });
 
   it('should should override the bottom offset of the overlay pane', () => {
@@ -183,7 +183,7 @@ describe('MdDialog', () => {
 
     let overlayPane = overlayContainerElement.querySelector('.md-overlay-pane') as HTMLElement;
 
-    expect(overlayPane.style.bottom).toBe('200px');
+    expect(overlayPane.style.marginBottom).toBe('200px');
   });
 
   it('should should override the left offset of the overlay pane', () => {
@@ -197,7 +197,7 @@ describe('MdDialog', () => {
 
     let overlayPane = overlayContainerElement.querySelector('.md-overlay-pane') as HTMLElement;
 
-    expect(overlayPane.style.left).toBe('250px');
+    expect(overlayPane.style.marginLeft).toBe('250px');
   });
 
   it('should should override the right offset of the overlay pane', () => {
@@ -211,7 +211,7 @@ describe('MdDialog', () => {
 
     let overlayPane = overlayContainerElement.querySelector('.md-overlay-pane') as HTMLElement;
 
-    expect(overlayPane.style.right).toBe('125px');
+    expect(overlayPane.style.marginRight).toBe('125px');
   });
 
   describe('disableClose option', () => {