diff --git a/include/gmalglib/sm2curve.h b/include/gmalglib/sm2curve.h
index fe85695..8dc933a 100644
--- a/include/gmalglib/sm2curve.h
+++ b/include/gmalglib/sm2curve.h
@@ -46,8 +46,8 @@ extern const UInt256* const SM2_PARAMS_N;
 void SM2JacobPointMont_ToPoint(const SM2JacobPointMont* X, SM2Point* Y);
 void SM2JacobPointMont_FromPoint(const SM2Point* X, SM2JacobPointMont* Y);
 
-int SM2Point_FromBytes(const uint8_t* bytes, uint64_t bytes_len, SM2Point* X);
 uint64_t SM2Point_ToBytes(const SM2Point* X, int pc_mode, uint8_t* bytes);
+int SM2Point_FromBytes(const uint8_t* bytes, uint64_t bytes_len, SM2Point* X);
 uint64_t SM2JacobPointMont_ToBytes(const SM2JacobPointMont* X, int pc_mode, uint8_t* bytes);
 int SM2JacobPointMont_FromBytes(const uint8_t* bytes, uint64_t bytes_len, SM2JacobPointMont* X);