diff --git a/src/layer/mips/mips_mathfun.h b/src/layer/mips/mips_mathfun.h
index c1f34b08f..703242ec3 100644
--- a/src/layer/mips/mips_mathfun.h
+++ b/src/layer/mips/mips_mathfun.h
@@ -170,11 +170,11 @@ static inline v4f32 tanh_ps(v4f32 x)
 
     // abs(x) > HALFMAXLOGF
     // return 1.0 or -1.0
-    v4i32_w mask_pos = __msa_fcle_w((v4f32)__msa_fill_w(0), x2);
-    v4f32 y1 = (v4f32)__msa_bsel_v((v16u8)mask_pos, (v16u8)__msa_fill_w(c_1.i), (v16u8)__msa_fill_w(c_n1.i));
+    v4i32_w mask_pos = __msa_fcle_w((v4f32)__msa_fill_w(0), x);
+    v4f32 y1 = (v4f32)__msa_bsel_v((v16u8)mask_pos, (v16u8)__msa_fill_w(c_n1.i), (v16u8)__msa_fill_w(c_1.i));
 
-    y = (v4f32)__msa_bsel_v((v16u8)mask_l, (v16u8)y0, (v16u8)y);
-    y = (v4f32)__msa_bsel_v((v16u8)mask_l2, (v16u8)y1, (v16u8)y);
+    y = (v4f32)__msa_bsel_v((v16u8)mask_l, (v16u8)y, (v16u8)y0);
+    y = (v4f32)__msa_bsel_v((v16u8)mask_l2, (v16u8)y, (v16u8)y1);
     return y;
 }
 
diff --git a/src/layer/mips/tanh_mips.cpp b/src/layer/mips/tanh_mips.cpp
index f5fb97e4c..92ff1576a 100644
--- a/src/layer/mips/tanh_mips.cpp
+++ b/src/layer/mips/tanh_mips.cpp
@@ -15,9 +15,8 @@
 #include "tanh_mips.h"
 
 #if __mips_msa
-#include "mips_mathfun.h"
-
 #include <msa.h>
+#include "mips_mathfun.h"
 #endif // __mips_msa
 
 #include <math.h>
@@ -36,14 +35,14 @@ int TanH_mips::forward_inplace(Mat& bottom_top_blob, const Option& opt) const
     {
         float* ptr = bottom_top_blob.channel(q);
 
-#if 0 // __mips_msa
+#if __mips_msa
         int nn = size >> 2;
         int remain = size - (nn << 2);
 #else
         int remain = size;
 #endif // __mips_msa
 
-#if 0  // __mips_msa
+#if __mips_msa
         for (; nn > 0; nn--)
         {
             v4f32 _p = (v4f32)__msa_ld_w(ptr, 0);