diff --git a/stdsimd/arch/detect/arch/arm.rs b/stdsimd/arch/detect/arch/arm.rs
index 8a5048a199..c6a36d3e8e 100644
--- a/stdsimd/arch/detect/arch/arm.rs
+++ b/stdsimd/arch/detect/arch/arm.rs
@@ -1,5 +1,6 @@
 //! Run-time feature detection on ARM Aarch32.
 
+/// Checks if `arm` feature is enabled.
 #[macro_export]
 #[unstable(feature = "stdsimd", issue = "27731")]
 #[allow_internal_unstable]
diff --git a/stdsimd/arch/detect/arch/mips.rs b/stdsimd/arch/detect/arch/mips.rs
index 58c9e4c16f..f049a1ae6a 100644
--- a/stdsimd/arch/detect/arch/mips.rs
+++ b/stdsimd/arch/detect/arch/mips.rs
@@ -1,5 +1,6 @@
 //! Run-time feature detection on MIPS.
 
+/// Checks if `mips` feature is enabled.
 #[macro_export]
 #[unstable(feature = "stdsimd", issue = "27731")]
 #[allow_internal_unstable]
diff --git a/stdsimd/arch/detect/arch/mips64.rs b/stdsimd/arch/detect/arch/mips64.rs
index de7765927b..d778865a61 100644
--- a/stdsimd/arch/detect/arch/mips64.rs
+++ b/stdsimd/arch/detect/arch/mips64.rs
@@ -1,5 +1,6 @@
 //! Run-time feature detection on MIPS64.
 
+/// Checks if `mips64` feature is enabled.
 #[macro_export]
 #[unstable(feature = "stdsimd", issue = "27731")]
 #[allow_internal_unstable]
diff --git a/stdsimd/arch/detect/arch/powerpc.rs b/stdsimd/arch/detect/arch/powerpc.rs
index e59f4a8220..0b3716f684 100644
--- a/stdsimd/arch/detect/arch/powerpc.rs
+++ b/stdsimd/arch/detect/arch/powerpc.rs
@@ -1,5 +1,6 @@
 //! Run-time feature detection on PowerPC.
 
+/// Checks if `powerpc` feature is enabled.
 #[macro_export]
 #[unstable(feature = "stdsimd", issue = "27731")]
 #[allow_internal_unstable]
diff --git a/stdsimd/arch/detect/arch/powerpc64.rs b/stdsimd/arch/detect/arch/powerpc64.rs
index 2695f6b1c8..f85ebe5b67 100644
--- a/stdsimd/arch/detect/arch/powerpc64.rs
+++ b/stdsimd/arch/detect/arch/powerpc64.rs
@@ -1,5 +1,6 @@
 //! Run-time feature detection on PowerPC64.
 
+/// Checks if `powerpc64` feature is enabled.
 #[macro_export]
 #[unstable(feature = "stdsimd", issue = "27731")]
 #[allow_internal_unstable]