diff --git a/servo/components/style/gecko/media_queries.rs b/servo/components/style/gecko/media_queries.rs
index 1c72137de073..dabdaf44f0c2 100644
--- a/servo/components/style/gecko/media_queries.rs
+++ b/servo/components/style/gecko/media_queries.rs
@@ -156,11 +156,8 @@ impl Device {
 
     
     pub fn au_viewport_size(&self) -> Size2D<Au> {
-        unsafe {
-            
-            let area = &self.pres_context().mVisibleArea;
-            Size2D::new(Au(area.width), Au(area.height))
-        }
+        let area = &self.pres_context().mVisibleArea;
+        Size2D::new(Au(area.width), Au(area.height))
     }