diff --git a/compiler/rustc_target/src/abi/mod.rs b/compiler/rustc_target/src/abi/mod.rs
index 5aeb6e544923e..975f47e535c4f 100644
--- a/compiler/rustc_target/src/abi/mod.rs
+++ b/compiler/rustc_target/src/abi/mod.rs
@@ -271,7 +271,7 @@ impl FromStr for Endian {
 
 impl ToJson for Endian {
     fn to_json(&self) -> Json {
-        Json::String(self.as_str().to_owned())
+        self.as_str().to_json()
     }
 }