diff --git a/components/style/gecko/url.rs b/components/style/gecko/url.rs
index 3ee7c830788..811a0250826 100644
--- a/components/style/gecko/url.rs
+++ b/components/style/gecko/url.rs
@@ -54,8 +54,9 @@ impl CssUrl {
 
     /// Returns true if this URL looks like a fragment.
     /// See https://drafts.csswg.org/css-values/#local-urls
+    #[inline]
     pub fn is_fragment(&self) -> bool {
-        self.as_str().chars().next().map_or(false, |c| c == '#')
+        self.0.is_fragment()
     }
 
     /// Return the unresolved url as string, or the empty string if it's
@@ -67,6 +68,12 @@ impl CssUrl {
 }
 
 impl CssUrlData {
+    /// Returns true if this URL looks like a fragment.
+    /// See https://drafts.csswg.org/css-values/#local-urls
+    pub fn is_fragment(&self) -> bool {
+        self.as_str().chars().next().map_or(false, |c| c == '#')
+    }
+
     /// Return the unresolved url as string, or the empty string if it's
     /// invalid.
     pub fn as_str(&self) -> &str {