diff --git a/src/layer/arm/shufflechannel_arm.cpp b/src/layer/arm/shufflechannel_arm.cpp
index fdc91946b371..4fdaece7348d 100644
--- a/src/layer/arm/shufflechannel_arm.cpp
+++ b/src/layer/arm/shufflechannel_arm.cpp
@@ -131,7 +131,8 @@ int ShuffleChannel_arm::forward(const Mat& bottom_blob, Mat& top_blob, const Opt
                     outptr0 += 4;
                 }
 
-                for (int i = 0; i < 4; i++) {
+                for (int i = 0; i < 4; i++)
+                {
                     if (i % 2)
                     {
                         *outptr = *ptr1;
@@ -393,7 +394,8 @@ int ShuffleChannel_arm::forward_bf16s_fp16s(const Mat& bottom_blob, Mat& top_blo
                     outptr0 += 8;
                 }
 
-                for (int i = 0; i < 8; i++) {
+                for (int i = 0; i < 8; i++)
+                {
                     if (i % 2)
                     {
                         *outptr = *ptr1;
@@ -640,7 +642,8 @@ int ShuffleChannel_arm::forward_bf16s_fp16s(const Mat& bottom_blob, Mat& top_blo
                     outptr0 += 4;
                 }
 
-                for (int i = 0; i < 4; i++) {
+                for (int i = 0; i < 4; i++)
+                {
                     if (i % 2)
                     {
                         *outptr = *ptr1;
diff --git a/src/layer/x86/shufflechannel_x86.cpp b/src/layer/x86/shufflechannel_x86.cpp
index 1a81f0736633..cf124b163905 100644
--- a/src/layer/x86/shufflechannel_x86.cpp
+++ b/src/layer/x86/shufflechannel_x86.cpp
@@ -135,7 +135,8 @@ int ShuffleChannel_x86::forward(const Mat& bottom_blob, Mat& top_blob, const Opt
                     outptr += 16;
                 }
 
-                for (int i = 0; i < 16; i++) {
+                for (int i = 0; i < 16; i++)
+                {
                     if (i % 2)
                     {
                         *outptr = *ptr1;
@@ -402,7 +403,8 @@ int ShuffleChannel_x86::forward(const Mat& bottom_blob, Mat& top_blob, const Opt
                     outptr += 8;
                 }
 
-                for (int i = 0; i < 8; i++) {
+                for (int i = 0; i < 8; i++)
+                {
                     if (i % 2)
                     {
                         *outptr = *ptr1;
@@ -649,7 +651,8 @@ int ShuffleChannel_x86::forward(const Mat& bottom_blob, Mat& top_blob, const Opt
                     outptr += 4;
                 }
 
-                for (int i = 0; i < 4; i++) {
+                for (int i = 0; i < 4; i++)
+                {
                     if (i % 2)
                     {
                         *outptr = *ptr1;