diff --git a/app/Protocols/General.php b/app/Protocols/General.php
index 2db907ac..d0f99a47 100644
--- a/app/Protocols/General.php
+++ b/app/Protocols/General.php
@@ -129,7 +129,7 @@ class General
                 $tlsSettings = $server['tls_settings'];
                 if (isset($tlsSettings['server_name']) && !empty($tlsSettings['server_name'])) $config['sni'] = $tlsSettings['server_name'];
                 $output .= "&sni={$config['sni']}";
-                if ($config['flow'] !=="") $output .= "&flow={$config['flow']}";
+                if ($config['flow'] !="") $output .= "&flow={$config['flow']}";
                 if ($server['tls'] == 2) {
                     $config['pbk'] = $tlsSettings['public_key'];
                     $config['sid'] = $tlsSettings['shortId'];
diff --git a/app/Protocols/Passwall.php b/app/Protocols/Passwall.php
index 30a2bc31..f5f4eb4a 100644
--- a/app/Protocols/Passwall.php
+++ b/app/Protocols/Passwall.php
@@ -118,7 +118,7 @@ class Passwall
                 $tlsSettings = $server['tls_settings'];
                 if (isset($tlsSettings['server_name']) && !empty($tlsSettings['server_name'])) $config['sni'] = $tlsSettings['server_name'];
                 $output .= "&sni={$config['sni']}";
-                if ($config['flow'] !=="") $output .= "&flow={$config['flow']}";
+                if ($config['flow'] !="") $output .= "&flow={$config['flow']}";
                 if ($server['tls'] == 2) {
                     $config['pbk'] = $tlsSettings['public_key'];
                     $config['sid'] = $tlsSettings['shortId'];
diff --git a/app/Protocols/SSRPlus.php b/app/Protocols/SSRPlus.php
index 5cd9d826..4c48b098 100644
--- a/app/Protocols/SSRPlus.php
+++ b/app/Protocols/SSRPlus.php
@@ -112,7 +112,7 @@ class SSRPlus
                 $tlsSettings = $server['tls_settings'];
                 if (isset($tlsSettings['server_name']) && !empty($tlsSettings['server_name'])) $config['sni'] = $tlsSettings['server_name'];
                 $output .= "&sni={$config['sni']}";
-                if ($config['flow'] !=="") $output .= "&flow={$config['flow']}";
+                if ($config['flow'] !="") $output .= "&flow={$config['flow']}";
                 if ($server['tls'] == 2) {
                     $config['pbk'] = $tlsSettings['public_key'];
                     $config['sid'] = $tlsSettings['shortId'];
diff --git a/app/Protocols/SagerNet.php b/app/Protocols/SagerNet.php
index cdc0b475..ac078e88 100644
--- a/app/Protocols/SagerNet.php
+++ b/app/Protocols/SagerNet.php
@@ -124,7 +124,7 @@ class SagerNet
                 $tlsSettings = $server['tls_settings'];
                 if (isset($tlsSettings['server_name']) && !empty($tlsSettings['server_name'])) $config['sni'] = $tlsSettings['server_name'];
                 $output .= "&sni={$config['sni']}";
-                if ($config['flow'] !=="") $output .= "&flow={$config['flow']}";
+                if ($config['flow'] !="") $output .= "&flow={$config['flow']}";
                 if ($server['tls'] == 2) {
                     $config['pbk'] = $tlsSettings['public_key'];
                     $config['sid'] = $tlsSettings['shortId'];
diff --git a/app/Protocols/Shadowrocket.php b/app/Protocols/Shadowrocket.php
index b82b61f7..9f07cb95 100644
--- a/app/Protocols/Shadowrocket.php
+++ b/app/Protocols/Shadowrocket.php
@@ -152,7 +152,7 @@ class Shadowrocket
                 $tlsSettings = $server['tls_settings'];
                 if (isset($tlsSettings['server_name']) && !empty($tlsSettings['server_name'])) $config['sni'] = $tlsSettings['server_name'];
                 $output .= "&sni={$config['sni']}";
-                if ($config['flow'] !=="") $output .= "&flow={$config['flow']}";
+                if ($config['flow'] !="") $output .= "&flow={$config['flow']}";
                 if ($server['tls'] == 2) {
                     $config['pbk'] = $tlsSettings['public_key'];
                     $config['sid'] = $tlsSettings['shortId'];
diff --git a/app/Protocols/V2rayN.php b/app/Protocols/V2rayN.php
index 4c476cf9..e1d43271 100644
--- a/app/Protocols/V2rayN.php
+++ b/app/Protocols/V2rayN.php
@@ -129,7 +129,7 @@ class V2rayN
                 $tlsSettings = $server['tls_settings'];
                 if (isset($tlsSettings['server_name']) && !empty($tlsSettings['server_name'])) $config['sni'] = $tlsSettings['server_name'];
                 $output .= "&sni={$config['sni']}";
-                if ($config['flow'] !=="") $output .= "&flow={$config['flow']}";
+                if ($config['flow'] !="") $output .= "&flow={$config['flow']}";
                 if ($server['tls'] == 2) {
                     $config['pbk'] = $tlsSettings['public_key'];
                     $config['sid'] = $tlsSettings['shortId'];
diff --git a/app/Protocols/V2rayNG.php b/app/Protocols/V2rayNG.php
index 1a32c3a9..7f1b44e4 100644
--- a/app/Protocols/V2rayNG.php
+++ b/app/Protocols/V2rayNG.php
@@ -118,7 +118,7 @@ class V2rayNG
                 $tlsSettings = $server['tls_settings'];
                 if (isset($tlsSettings['server_name']) && !empty($tlsSettings['server_name'])) $config['sni'] = $tlsSettings['server_name'];
                 $output .= "&sni={$config['sni']}";
-                if ($config['flow'] !=="") $output .= "&flow={$config['flow']}";
+                if ($config['flow'] !="") $output .= "&flow={$config['flow']}";
                 if ($server['tls'] == 2) {
                     $config['pbk'] = $tlsSettings['public_key'];
                     $config['sid'] = $tlsSettings['shortId'];