diff --git a/components/style/build_gecko.rs b/components/style/build_gecko.rs
index eacee6b3633..2db39701c5e 100644
--- a/components/style/build_gecko.rs
+++ b/components/style/build_gecko.rs
@@ -780,11 +780,6 @@ mod bindings {
             "RawGeckoServoStyleRuleList",
         ];
         for &ty in structs_types.iter() {
-            // XXX cku: will be removed in Part 2.
-            if ty.starts_with("mozilla::css::ImageValue") {
-                builder = builder
-                    .raw_line("#[allow(unused_imports)]");
-            }
             builder = builder.hide_type(ty)
                 .raw_line(format!("use gecko_bindings::structs::{};", ty));
             // TODO this is hacky, figure out a better way to do it without
diff --git a/components/style/gecko_bindings/sugar/refptr.rs b/components/style/gecko_bindings/sugar/refptr.rs
index 2b3776e70fd..332fd3d857f 100644
--- a/components/style/gecko_bindings/sugar/refptr.rs
+++ b/components/style/gecko_bindings/sugar/refptr.rs
@@ -280,3 +280,7 @@ impl_threadsafe_refcount!(::gecko_bindings::structs::mozilla::css::URLValue,
 impl_threadsafe_refcount!(::gecko_bindings::structs::mozilla::css::GridTemplateAreasValue,
                           Gecko_AddRefGridTemplateAreasValueArbitraryThread,
                           Gecko_ReleaseGridTemplateAreasValueArbitraryThread);
+impl_threadsafe_refcount!(::gecko_bindings::structs::ImageValue,
+                          Gecko_AddRefImageValueArbitraryThread,
+                          Gecko_ReleaseImageValueArbitraryThread);
+