1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_attr_parsing/src/attributes/transparency.rs b/compiler/rustc_attr_parsing/src/attributes/transparency.rs
index ce638d09530..ea1f5549c4e 100644
--- a/compiler/rustc_attr_parsing/src/attributes/transparency.rs
+++ b/compiler/rustc_attr_parsing/src/attributes/transparency.rs
@@ -29,7 +29,7 @@ impl<S: Stage> SingleAttributeParser<S> for TransparencyParser {
             Some(_) => {
                 cx.expected_specific_argument_strings(
                     nv.value_span,
-                    vec!["transparent", "semitransparent", "opaque"],
+                    &[sym::transparent, sym::semitransparent, sym::opaque],
                 );
                 None
             }