diff --git a/rustfmt-core/rustfmt-lib/tests/source/cfg_if/lib.rs b/rustfmt-core/rustfmt-lib/tests/source/cfg_if/lib.rs
index 8b3bb304f1c..17e76286a61 100644
--- a/rustfmt-core/rustfmt-lib/tests/source/cfg_if/lib.rs
+++ b/rustfmt-core/rustfmt-lib/tests/source/cfg_if/lib.rs
@@ -1,3 +1,5 @@
+// rustfmt-recursive: true
+
 //! Run-time feature detection for the Rust standard library.
 //!
 //! To detect whether a feature is enabled in the system running the binary
diff --git a/rustfmt-core/rustfmt-lib/tests/target/cfg_if/lib.rs b/rustfmt-core/rustfmt-lib/tests/target/cfg_if/lib.rs
index 8b3bb304f1c..17e76286a61 100644
--- a/rustfmt-core/rustfmt-lib/tests/target/cfg_if/lib.rs
+++ b/rustfmt-core/rustfmt-lib/tests/target/cfg_if/lib.rs
@@ -1,3 +1,5 @@
+// rustfmt-recursive: true
+
 //! Run-time feature detection for the Rust standard library.
 //!
 //! To detect whether a feature is enabled in the system running the binary