diff --git a/capstone-rs/src/arch/arm.rs b/capstone-rs/src/arch/arm.rs
index be8376f..4390733 100644
--- a/capstone-rs/src/arch/arm.rs
+++ b/capstone-rs/src/arch/arm.rs
@@ -130,8 +130,9 @@ pub struct ArmOperand {
     /// Operand type
     pub op_type: ArmOperandType,
 
-    /// How is this operand accessed? NOTE: this field is irrelevant if engine
-    /// is compiled in DIET mode.
+    /// How is this operand accessed?
+    ///
+    /// NOTE: this field is always `None` if the "full" feataure is not enabled.
     pub access: Option<RegAccessType>
 }
 
diff --git a/capstone-rs/src/arch/x86.rs b/capstone-rs/src/arch/x86.rs
index e96ef03..aa65668 100644
--- a/capstone-rs/src/arch/x86.rs
+++ b/capstone-rs/src/arch/x86.rs
@@ -47,8 +47,9 @@ pub struct X86Operand {
     /// Operand size
     pub size: u8,
 
-    /// How is this operand accessed? NOTE: this field is irrelevant if engine
-    /// is compiled in DIET mode.
+    /// How is this operand accessed?
+    ///
+    /// NOTE: this field is always `None` if the "full" feataure is not enabled.
     pub access: Option<RegAccessType>,
 
     /// AVX broadcast