diff --git a/riscv-elf.adoc b/riscv-elf.adoc
index 8a0f909a..89b4802b 100644
--- a/riscv-elf.adoc
+++ b/riscv-elf.adoc
@@ -1189,9 +1189,8 @@ file. Its values are defined as follows:
 | Value | Symbolic Name       | Compatibility                        | Description
 
 | 0     | UNKNOWN_ATOMIC_ABI  | Compatible with all other value.     | This object use unknown atomic ABI.
-| 1     | NON_ATOMIC_ABI      | Incompatible with all other atomic ABI other than unknown. | Atomic opertiaon all using plain load store operaion, this ABI should only used when A-extension is absent.
-| 2     | A6C_ATOMIC_ABI      | Compatible with unknown and A6S_ATOMIC_ABI. | This object use the A6 classical atomic ABI, which defined in table A.6 in <<riscv-unpriv-20191213>>.
-| 3     | A6S_ATOMIC_ABI      | Compatible with unknown and A6C_ATOMIC_ABI. | This object use the strengthened A6 ABI, which defined in <<Mappings from C/C++ primitives to RISC-V primitives>>.
+| 1     | A6C_ATOMIC_ABI      | Compatible with unknown and A6S_ATOMIC_ABI. | This object use the A6 classical atomic ABI, which defined in table A.6 in <<riscv-unpriv-20191213>>.
+| 2     | A6S_ATOMIC_ABI      | Compatible with unknown and A6C_ATOMIC_ABI. | This object use the strengthened A6 ABI, which defined in <<Mappings from C/C++ primitives to RISC-V primitives>>.
 |===
 
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