diff --git a/src/layer/arm/shufflechannel_arm.cpp b/src/layer/arm/shufflechannel_arm.cpp
index 571e983166fe..096b6741d17d 100644
--- a/src/layer/arm/shufflechannel_arm.cpp
+++ b/src/layer/arm/shufflechannel_arm.cpp
@@ -117,7 +117,7 @@ int ShuffleChannel_arm::forward(const Mat& bottom_blob, Mat& top_blob, const Opt
 
                 ptr1 += 2;
 
-                for (int i = 0; i < size; i++)
+                for (int i = 0; i < size - 1; i++)
                 {
                     float32x4_t _p0 = vld1q_f32(ptr0);
                     float32x4_t _p1 = vld1q_f32(ptr1);
@@ -130,6 +130,21 @@ int ShuffleChannel_arm::forward(const Mat& bottom_blob, Mat& top_blob, const Opt
                     ptr1 += 4;
                     outptr0 += 4;
                 }
+
+                for (int i = 0; i < 4; i++)
+                {
+                    if (i % 2)
+                    {
+                        *outptr0 = *ptr1;
+                        ptr1 += 1;
+                    }
+                    else
+                    {
+                        *outptr0 = *ptr0;
+                        ptr0 += 1;
+                    }
+                    outptr0 += 1;
+                }
             }
 
             return 0;
@@ -364,7 +379,7 @@ int ShuffleChannel_arm::forward_bf16s_fp16s(const Mat& bottom_blob, Mat& top_blo
 
                 ptr1 += 4;
 
-                for (int i = 0; i < size; i++)
+                for (int i = 0; i < size - 1; i++)
                 {
                     uint16x4_t _p0 = vld1_u16(ptr0);
                     uint16x4_t _p1 = vld1_u16(ptr1);
@@ -378,6 +393,21 @@ int ShuffleChannel_arm::forward_bf16s_fp16s(const Mat& bottom_blob, Mat& top_blo
                     ptr1 += 8;
                     outptr0 += 8;
                 }
+
+                for (int i = 0; i < 8; i++)
+                {
+                    if (i % 2)
+                    {
+                        *outptr0 = *ptr1;
+                        ptr1 += 1;
+                    }
+                    else
+                    {
+                        *outptr0 = *ptr0;
+                        ptr0 += 1;
+                    }
+                    outptr0 += 1;
+                }
             }
 
             return 0;
@@ -598,7 +628,7 @@ int ShuffleChannel_arm::forward_bf16s_fp16s(const Mat& bottom_blob, Mat& top_blo
 
                 ptr1 += 2;
 
-                for (int i = 0; i < size; i++)
+                for (int i = 0; i < size - 1; i++)
                 {
                     uint16x4_t _p0 = vld1_u16(ptr0);
                     uint16x4_t _p1 = vld1_u16(ptr1);
@@ -611,6 +641,21 @@ int ShuffleChannel_arm::forward_bf16s_fp16s(const Mat& bottom_blob, Mat& top_blo
                     ptr1 += 4;
                     outptr0 += 4;
                 }
+
+                for (int i = 0; i < 4; i++)
+                {
+                    if (i % 2)
+                    {
+                        *outptr0 = *ptr1;
+                        ptr1 += 1;
+                    }
+                    else
+                    {
+                        *outptr0 = *ptr0;
+                        ptr0 += 1;
+                    }
+                    outptr0 += 1;
+                }
             }
 
             return 0;
diff --git a/src/layer/x86/shufflechannel_x86.cpp b/src/layer/x86/shufflechannel_x86.cpp
index b1bd9b4a7de7..cf124b163905 100644
--- a/src/layer/x86/shufflechannel_x86.cpp
+++ b/src/layer/x86/shufflechannel_x86.cpp
@@ -116,7 +116,7 @@ int ShuffleChannel_x86::forward(const Mat& bottom_blob, Mat& top_blob, const Opt
 
                 ptr1 += 8;
 
-                for (int i = 0; i < size; i++)
+                for (int i = 0; i < size - 1; i++)
                 {
                     __m256 _p0 = _mm256_loadu_ps(ptr0);
                     __m256 _p1 = _mm256_loadu_ps(ptr1);
@@ -134,6 +134,21 @@ int ShuffleChannel_x86::forward(const Mat& bottom_blob, Mat& top_blob, const Opt
                     ptr1 += 16;
                     outptr += 16;
                 }
+
+                for (int i = 0; i < 16; i++)
+                {
+                    if (i % 2)
+                    {
+                        *outptr = *ptr1;
+                        ptr1 += 1;
+                    }
+                    else
+                    {
+                        *outptr = *ptr0;
+                        ptr0 += 1;
+                    }
+                    outptr += 1;
+                }
             }
 
             return 0;
@@ -372,7 +387,7 @@ int ShuffleChannel_x86::forward(const Mat& bottom_blob, Mat& top_blob, const Opt
 
                 ptr1 += 4;
 
-                for (int i = 0; i < size; i++)
+                for (int i = 0; i < size - 1; i++)
                 {
                     __m128 _p0 = _mm_loadu_ps(ptr0);
                     __m128 _p1 = _mm_loadu_ps(ptr1);
@@ -387,6 +402,21 @@ int ShuffleChannel_x86::forward(const Mat& bottom_blob, Mat& top_blob, const Opt
                     ptr1 += 8;
                     outptr += 8;
                 }
+
+                for (int i = 0; i < 8; i++)
+                {
+                    if (i % 2)
+                    {
+                        *outptr = *ptr1;
+                        ptr1 += 1;
+                    }
+                    else
+                    {
+                        *outptr = *ptr0;
+                        ptr0 += 1;
+                    }
+                    outptr += 1;
+                }
             }
 
             return 0;
@@ -607,7 +637,7 @@ int ShuffleChannel_x86::forward(const Mat& bottom_blob, Mat& top_blob, const Opt
 
                 ptr1 += 2;
 
-                for (int i = 0; i < size; i++)
+                for (int i = 0; i < size - 1; i++)
                 {
                     __m128 _p0 = _mm_loadu_ps(ptr0);
                     __m128 _p1 = _mm_loadu_ps(ptr1);
@@ -620,6 +650,21 @@ int ShuffleChannel_x86::forward(const Mat& bottom_blob, Mat& top_blob, const Opt
                     ptr1 += 4;
                     outptr += 4;
                 }
+
+                for (int i = 0; i < 4; i++)
+                {
+                    if (i % 2)
+                    {
+                        *outptr = *ptr1;
+                        ptr1 += 1;
+                    }
+                    else
+                    {
+                        *outptr = *ptr0;
+                        ptr0 += 1;
+                    }
+                    outptr += 1;
+                }
             }
 
             return 0;