diff --git a/kernel/loongarch64/csum_lasx.S b/kernel/loongarch64/csum_lasx.S
index 3e65f2c15..146689978 100644
--- a/kernel/loongarch64/csum_lasx.S
+++ b/kernel/loongarch64/csum_lasx.S
@@ -104,7 +104,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     xvfadd.s res1, VX0, res1
     xvfadd.s res1, VX1, res1
     xvfadd.s res1, VX2, res1
-    xvfadd.s res1, VX2, res1
+    xvfadd.s res1, VX3, res1
 #endif
     .align 3
 
@@ -246,7 +246,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     xvfadd.s res1, VX0, res1
     xvfadd.s res1, VX1, res1
     xvfadd.s res1, VX2, res1
-    xvfadd.s res1, VX2, res1
+    xvfadd.s res1, VX3, res1
 #endif
     .align 3
 
diff --git a/kernel/loongarch64/sum_lasx.S b/kernel/loongarch64/sum_lasx.S
index fd6d5adb3..895b49b90 100644
--- a/kernel/loongarch64/sum_lasx.S
+++ b/kernel/loongarch64/sum_lasx.S
@@ -96,7 +96,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     xvfadd.s res1, VX0, res1
     xvfadd.s res1, VX1, res1
     xvfadd.s res1, VX2, res1
-    xvfadd.s res1, VX2, res1
+    xvfadd.s res1, VX3, res1
 #endif
     .align 3
 
@@ -200,7 +200,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     xvfadd.s res1, VX0, res1
     xvfadd.s res1, VX1, res1
     xvfadd.s res1, VX2, res1
-    xvfadd.s res1, VX2, res1
+    xvfadd.s res1, VX3, res1
 #endif
     .align 3