diff --git a/components/style/gecko_bindings/bindings.rs b/components/style/gecko_bindings/bindings.rs
index 978a1ef8250..74c78ef7efc 100644
--- a/components/style/gecko_bindings/bindings.rs
+++ b/components/style/gecko_bindings/bindings.rs
@@ -1686,6 +1686,9 @@ extern "C" {
                                                           nsCSSPropertyID)
      -> RawServoAnimationValueStrong;
 }
+extern "C" {
+    pub fn Servo_Property_IsAnimatable(property: nsCSSPropertyID) -> bool;
+}
 extern "C" {
     pub fn Servo_Property_IsDiscreteAnimatable(property: nsCSSPropertyID)
      -> bool;
diff --git a/components/style/properties/helpers/animated_properties.mako.rs b/components/style/properties/helpers/animated_properties.mako.rs
index b38cd04db72..ff11c9d5930 100644
--- a/components/style/properties/helpers/animated_properties.mako.rs
+++ b/components/style/properties/helpers/animated_properties.mako.rs
@@ -118,6 +118,19 @@ impl TransitionProperty {
     }
 }
 
+/// Returns true if this nsCSSPropertyID is one of the animatable properties.
+#[cfg(feature = "gecko")]
+pub fn nscsspropertyid_is_animatable(property: nsCSSPropertyID) -> bool {
+    match property {
+        % for prop in data.longhands:
+            % if prop.animatable:
+                ${helpers.to_nscsspropertyid(prop.ident)} => true,
+            % endif
+        % endfor
+        _ => false
+    }
+}
+
 impl ToCss for TransitionProperty {
     fn to_css<W>(&self, dest: &mut W) -> fmt::Result
         where W: fmt::Write,
diff --git a/ports/geckolib/glue.rs b/ports/geckolib/glue.rs
index d1205a0f574..06b6d9bc6b2 100644
--- a/ports/geckolib/glue.rs
+++ b/ports/geckolib/glue.rs
@@ -461,6 +461,12 @@ pub extern "C" fn Servo_ComputedValues_ExtractAnimationValue(computed_values: Se
     Arc::new(AnimationValue::from_computed_values(&property_id.into(), computed_values)).into_strong()
 }
 
+#[no_mangle]
+pub extern "C" fn Servo_Property_IsAnimatable(property: nsCSSPropertyID) -> bool {
+    use style::properties::animated_properties;
+    animated_properties::nscsspropertyid_is_animatable(property)
+}
+
 #[no_mangle]
 pub extern "C" fn Servo_Property_IsDiscreteAnimatable(property: nsCSSPropertyID) -> bool {
     let property: TransitionProperty = property.into();