diff --git a/kernel/mips/cgemv_n_msa.c b/kernel/mips/cgemv_n_msa.c
index 12fa7ca02..c1eb9bbfd 100644
--- a/kernel/mips/cgemv_n_msa.c
+++ b/kernel/mips/cgemv_n_msa.c
@@ -56,11 +56,11 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     #if !defined(XCONJ)
         #define OP0  +=
         #define OP1  -=
-        #define OP2  -=
+        #define OP2  +=
     #else
         #define OP0  -=
         #define OP1  -=
-        #define OP2  +=
+        #define OP2  -=
     #endif
 #endif
 
diff --git a/kernel/mips/cgemv_t_msa.c b/kernel/mips/cgemv_t_msa.c
index 584e3de75..800667b6e 100644
--- a/kernel/mips/cgemv_t_msa.c
+++ b/kernel/mips/cgemv_t_msa.c
@@ -32,14 +32,26 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #undef OP1
 #undef OP2
 
-#if ( !defined(CONJ) && !defined(XCONJ) ) || ( defined(CONJ) && defined(XCONJ) )
-    #define OP0  -=
-    #define OP1  +=
-    #define OP2  +=
+#if !defined(CONJ)
+    #if !defined(XCONJ)
+        #define OP0  -=
+        #define OP1  +=
+        #define OP2  +=
+    #else
+        #define OP0  +=
+        #define OP1  +=
+        #define OP2  -=
+    #endif
 #else
-    #define OP0  +=
-    #define OP1  +=
-    #define OP2  -=
+    #if !defined(XCONJ)
+        #define OP0  +=
+        #define OP1  -=
+        #define OP2  +=
+    #else
+        #define OP0  -=
+        #define OP1  -=
+        #define OP2  -=
+    #endif
 #endif
 
 #define CGEMV_T_8x4()                        \
diff --git a/kernel/mips/zgemv_n_msa.c b/kernel/mips/zgemv_n_msa.c
index 669c25758..97a80b4ba 100644
--- a/kernel/mips/zgemv_n_msa.c
+++ b/kernel/mips/zgemv_n_msa.c
@@ -56,11 +56,11 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     #if !defined(XCONJ)
         #define OP0  +=
         #define OP1  -=
-        #define OP2  -=
+        #define OP2  +=
     #else
         #define OP0  -=
         #define OP1  -=
-        #define OP2  +=
+        #define OP2  -=
     #endif
 #endif
 
diff --git a/kernel/mips/zgemv_t_msa.c b/kernel/mips/zgemv_t_msa.c
index e6febb577..6492f90be 100644
--- a/kernel/mips/zgemv_t_msa.c
+++ b/kernel/mips/zgemv_t_msa.c
@@ -34,14 +34,26 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #undef OP3
 #undef OP4
 
-#if ( !defined(CONJ) && !defined(XCONJ) ) || ( defined(CONJ) && defined(XCONJ) )
-    #define OP0  -=
-    #define OP1  +=
-    #define OP2  +=
+#if !defined(CONJ)
+    #if !defined(XCONJ)
+        #define OP0  -=
+        #define OP1  +=
+        #define OP2  +=
+    #else
+        #define OP0  +=
+        #define OP1  +=
+        #define OP2  -=
+    #endif
 #else
-    #define OP0  +=
-    #define OP1  +=
-    #define OP2  -=
+    #if !defined(XCONJ)
+        #define OP0  +=
+        #define OP1  -=
+        #define OP2  +=
+    #else
+        #define OP0  -=
+        #define OP1  -=
+        #define OP2  -=
+    #endif
 #endif
 
 #define ZGEMV_T_8x1()                     \