diff --git a/components/style/gecko/restyle_damage.rs b/components/style/gecko/restyle_damage.rs
index 2af898a28aa..cd8402d07af 100644
--- a/components/style/gecko/restyle_damage.rs
+++ b/components/style/gecko/restyle_damage.rs
@@ -55,7 +55,7 @@ impl GeckoRestyleDamage {
         let mut any_style_changed: bool = false;
         let hint = unsafe {
             bindings::Gecko_CalcStyleDifference(context,
-                                                &new_style,
+                                                new_style.as_style_context(),
                                                 &mut any_style_changed)
         };
         let change = if any_style_changed { StyleChange::Changed } else { StyleChange::Unchanged };
diff --git a/components/style/properties/gecko.mako.rs b/components/style/properties/gecko.mako.rs
index 055d33a62c9..f34b8a9d8fa 100644
--- a/components/style/properties/gecko.mako.rs
+++ b/components/style/properties/gecko.mako.rs
@@ -137,6 +137,10 @@ impl ComputedValues {
         let atom = Atom::from(atom);
         PseudoElement::from_atom(&atom)
     }
+
+    pub fn as_style_context(&self) -> &::gecko_bindings::structs::mozilla::ServoStyleContext {
+        &self.0
+    }
 }
 
 impl Drop for ComputedValues {