diff --git a/crates/core_arch/rustfmt.toml b/crates/core_arch/rustfmt.toml
new file mode 100644
index 0000000000..4ae742ba8d
--- /dev/null
+++ b/crates/core_arch/rustfmt.toml
@@ -0,0 +1,3 @@
+ignore = [
+    "src/simd.rs",
+]
diff --git a/crates/core_arch/src/simd.rs b/crates/core_arch/src/simd.rs
index b86a5ff288..746f084641 100644
--- a/crates/core_arch/src/simd.rs
+++ b/crates/core_arch/src/simd.rs
@@ -1,6 +1,5 @@
 //! Internal `#[repr(simd)]` types
 
-#![rustfmt::skip]
 #![allow(non_camel_case_types)]
 
 macro_rules! simd_ty {