diff --git a/modules/axhal/src/arch/mod.rs b/modules/axhal/src/arch/mod.rs
index 43d2c73a4a..9b8681d450 100644
--- a/modules/axhal/src/arch/mod.rs
+++ b/modules/axhal/src/arch/mod.rs
@@ -16,10 +16,10 @@ cfg_if::cfg_if! {
 /// Cache operations.
 #[derive(Debug, Clone, Copy)]
 pub enum CacheOp {
-    // Write back to memory
+    /// Write back to memory
     Clean,
-    // Invalidate cache
+    /// Invalidate cache
     Invalidate,
-    // Clean and invalidate
+    /// Clean and invalidate
     CleanAndInvalidate,
 }