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-rw-r--r--crates/syntax/src/tests/sourcegen_ast.rs3
1 files changed, 2 insertions, 1 deletions
diff --git a/crates/syntax/src/tests/sourcegen_ast.rs b/crates/syntax/src/tests/sourcegen_ast.rs
index 564cf6663cb..c9f3c2cb8e1 100644
--- a/crates/syntax/src/tests/sourcegen_ast.rs
+++ b/crates/syntax/src/tests/sourcegen_ast.rs
@@ -318,7 +318,8 @@ fn generate_nodes(kinds: KindsSrc<'_>, grammar: &AstSrc) -> String {
         }
     }
 
-    sourcegen::add_preamble("sourcegen_ast", sourcegen::reformat(res))
+    let res = sourcegen::add_preamble("sourcegen_ast", sourcegen::reformat(res));
+    res.replace("#[derive", "\n#[derive")
 }
 
 fn write_doc_comment(contents: &[String], dest: &mut String) {