diff --git a/components/style/properties/gecko.mako.rs b/components/style/properties/gecko.mako.rs
index bff9d838ef5..02e3ace6f44 100644
--- a/components/style/properties/gecko.mako.rs
+++ b/components/style/properties/gecko.mako.rs
@@ -2123,6 +2123,17 @@ fn static_assert() {
         self.gecko.mPerspectiveOrigin[1].copy_from(&other.gecko.mPerspectiveOrigin[1]);
     }
 
+    pub fn clone_perspective_origin(&self) -> longhands::perspective_origin::computed_value::T {
+        use properties::longhands::perspective_origin::computed_value::T;
+        use values::computed::LengthOrPercentage;
+        T {
+            horizontal: LengthOrPercentage::from_gecko_style_coord(&self.gecko.mPerspectiveOrigin[0])
+                .expect("Expected length or percentage for horizontal value of perspective-origin"),
+            vertical: LengthOrPercentage::from_gecko_style_coord(&self.gecko.mPerspectiveOrigin[1])
+                .expect("Expected length or percentage for vertical value of perspective-origin"),
+        }
+    }
+
     pub fn set_transform_origin(&mut self, v: longhands::transform_origin::computed_value::T) {
         self.gecko.mTransformOrigin[0].set(v.horizontal);
         self.gecko.mTransformOrigin[1].set(v.vertical);
diff --git a/components/style/properties/longhand/box.mako.rs b/components/style/properties/longhand/box.mako.rs
index 731b59552ba..851beb6267c 100644
--- a/components/style/properties/longhand/box.mako.rs
+++ b/components/style/properties/longhand/box.mako.rs
@@ -1868,8 +1868,7 @@ ${helpers.predefined_type("perspective",
                           fixpos_cb=True,
                           animation_type="normal")}
 
-// FIXME: This prop should be animatable
-<%helpers:longhand name="perspective-origin" boxed="True" animation_type="none" extra_prefixes="moz webkit"
+<%helpers:longhand name="perspective-origin" boxed="True" animation_type="normal" extra_prefixes="moz webkit"
                    spec="https://drafts.csswg.org/css-transforms/#perspective-origin-property">
     use std::fmt;
     use style_traits::ToCss;
@@ -1877,22 +1876,11 @@ ${helpers.predefined_type("perspective",
     use values::specified::{LengthOrPercentage, Percentage};
 
     pub mod computed_value {
+        use properties::animated_properties::Interpolate;
         use values::computed::LengthOrPercentage;
+        use values::computed::Position;
 
-        #[derive(Clone, Copy, Debug, PartialEq)]
-        #[cfg_attr(feature = "servo", derive(HeapSizeOf))]
-        pub struct T {
-            pub horizontal: LengthOrPercentage,
-            pub vertical: LengthOrPercentage,
-        }
-    }
-
-    impl ToCss for computed_value::T {
-        fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
-            try!(self.horizontal.to_css(dest));
-            try!(dest.write_str(" "));
-            self.vertical.to_css(dest)
-        }
+        pub type T = Position;
     }
 
     impl HasViewportPercentage for SpecifiedValue {