diff --git a/components/style/build_gecko.rs b/components/style/build_gecko.rs
index 85d80fae1d4..33c5b7a532f 100644
--- a/components/style/build_gecko.rs
+++ b/components/style/build_gecko.rs
@@ -624,6 +624,7 @@ mod bindings {
             .whitelisted_function("Gecko_.*");
         let structs_types = [
             "mozilla::css::GridTemplateAreasValue",
+            "mozilla::css::ImageValue",
             "mozilla::css::URLValue",
             "mozilla::Side",
             "RawGeckoAnimationPropertySegment",
@@ -764,6 +765,11 @@ 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