diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs
index b444f66258a8e..6811c70de8e57 100644
--- a/compiler/rustc_session/src/config.rs
+++ b/compiler/rustc_session/src/config.rs
@@ -755,7 +755,7 @@ impl DebuggingOptions {
     }
 
     pub fn get_symbol_mangling_version(&self) -> SymbolManglingVersion {
-        self.symbol_mangling_version.unwrap_or(SymbolManglingVersion::Legacy)
+        self.symbol_mangling_version.unwrap_or(SymbolManglingVersion::V0)
     }
 }
 
diff --git a/src/test/codegen/vec-shrink-panic.rs b/src/test/codegen/vec-shrink-panik.rs
similarity index 100%
rename from src/test/codegen/vec-shrink-panic.rs
rename to src/test/codegen/vec-shrink-panik.rs