1 files changed, 1 insertions, 1 deletions
diff --git a/components/script/dom/domimplementation.rs b/components/script/dom/domimplementation.rs
index e0f9d69a45a..8c1bee4f334 100644
--- a/components/script/dom/domimplementation.rs
+++ b/components/script/dom/domimplementation.rs
@@ -57,7 +57,7 @@ impl DOMImplementationMethods for DOMImplementation {
                           pubid: DOMString,
                           sysid: DOMString)
                           -> Fallible<Root<DocumentType>> {
-        try!(validate_qualified_name(&qualified_name));
+        validate_qualified_name(&qualified_name)?;
         Ok(DocumentType::new(qualified_name, Some(pubid), Some(sysid), &self.document))
     }