diff --git a/library/stdarch/crates/core_arch/src/wasm32/simd128.rs b/library/stdarch/crates/core_arch/src/wasm32/simd128.rs
index 798035d76ad4..bb8e238a9182 100644
--- a/library/stdarch/crates/core_arch/src/wasm32/simd128.rs
+++ b/library/stdarch/crates/core_arch/src/wasm32/simd128.rs
@@ -24,7 +24,7 @@ types! {
 }
 
 #[allow(non_camel_case_types)]
-#[unstable(feature = "stdimd_internal", issue = "none")]
+#[unstable(feature = "stdsimd_internal", issue = "none")]
 pub(crate) trait v128Ext: Sized {
     unsafe fn as_v128(self) -> v128;
 
diff --git a/library/stdarch/crates/core_arch/src/x86/mod.rs b/library/stdarch/crates/core_arch/src/x86/mod.rs
index 7de6696a7df9..fcb63bcfb245 100644
--- a/library/stdarch/crates/core_arch/src/x86/mod.rs
+++ b/library/stdarch/crates/core_arch/src/x86/mod.rs
@@ -324,7 +324,7 @@ mod test;
 pub use self::test::*;
 
 #[allow(non_camel_case_types)]
-#[unstable(feature = "stdimd_internal", issue = "none")]
+#[unstable(feature = "stdsimd_internal", issue = "none")]
 pub(crate) trait m128iExt: Sized {
     fn as_m128i(self) -> __m128i;
 
@@ -377,7 +377,7 @@ impl m128iExt for __m128i {
 }
 
 #[allow(non_camel_case_types)]
-#[unstable(feature = "stdimd_internal", issue = "none")]
+#[unstable(feature = "stdsimd_internal", issue = "none")]
 pub(crate) trait m256iExt: Sized {
     fn as_m256i(self) -> __m256i;
 
@@ -430,7 +430,7 @@ impl m256iExt for __m256i {
 }
 
 #[allow(non_camel_case_types)]
-#[unstable(feature = "stdimd_internal", issue = "none")]
+#[unstable(feature = "stdsimd_internal", issue = "none")]
 pub(crate) trait m256Ext: Sized {
     fn as_m256(self) -> __m256;
 
@@ -448,7 +448,7 @@ impl m256Ext for __m256 {
 }
 
 #[allow(non_camel_case_types)]
-#[unstable(feature = "stdimd_internal", issue = "none")]
+#[unstable(feature = "stdsimd_internal", issue = "none")]
 pub(crate) trait m512iExt: Sized {
     fn as_m512i(self) -> __m512i;
 
@@ -481,7 +481,7 @@ impl m512iExt for __m512i {
 }
 
 #[allow(non_camel_case_types)]
-#[unstable(feature = "stdimd_internal", issue = "none")]
+#[unstable(feature = "stdsimd_internal", issue = "none")]
 pub(crate) trait m512Ext: Sized {
     fn as_m512(self) -> __m512;
 
@@ -499,7 +499,7 @@ impl m512Ext for __m512 {
 }
 
 #[allow(non_camel_case_types)]
-#[unstable(feature = "stdimd_internal", issue = "none")]
+#[unstable(feature = "stdsimd_internal", issue = "none")]
 pub(crate) trait m512dExt: Sized {
     fn as_m512d(self) -> __m512d;