diff --git a/src/client.rs b/src/client.rs
index 202eec6..420e9bf 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -1186,9 +1186,10 @@ impl Builder {
         self
     }
 
-    /// unknown_setting8
+    /// Sets the enable connect protocol.
     pub fn unknown_setting8(&mut self, enabled: bool) -> &mut Self {
-        self.settings.set_unknown_setting_8(enabled);
+        self.settings
+            .set_enable_connect_protocol(Some(enabled as _));
         self
     }
 
diff --git a/src/frame/settings.rs b/src/frame/settings.rs
index 6684460..dc3fafd 100644
--- a/src/frame/settings.rs
+++ b/src/frame/settings.rs
@@ -51,7 +51,6 @@ pub struct Settings {
     max_frame_size: Option<u32>,
     max_header_list_size: Option<u32>,
     enable_connect_protocol: Option<u32>,
-    unknown_setting_8: Option<u32>,
     unknown_setting_9: Option<u32>,
     // Fields for the settings frame order
     settings_orders: SettingsOrders,
@@ -70,7 +69,6 @@ pub enum Setting {
     MaxFrameSize(u32),
     MaxHeaderListSize(u32),
     EnableConnectProtocol(u32),
-    UnknownSetting8(u32),
     UnknownSetting9(u32),
 }
 
@@ -168,10 +166,6 @@ impl Settings {
         self.header_table_size = size;
     }
 
-    pub fn set_unknown_setting_8(&mut self, enable: bool) {
-        self.unknown_setting_8 = Some(enable as u32);
-    }
-
     pub fn set_unknown_setting_9(&mut self, enable: bool) {
         self.unknown_setting_9 = Some(enable as u32);
     }
@@ -252,14 +246,6 @@ impl Settings {
                         return Err(Error::InvalidSettingValue);
                     }
                 },
-                Some(UnknownSetting8(val)) => match val {
-                    0 | 1 => {
-                        settings.unknown_setting_8 = Some(val);
-                    }
-                    _ => {
-                        return Err(Error::InvalidSettingValue);
-                    }
-                },
                 Some(UnknownSetting9(val)) => match val {
                     0 | 1 => {
                         settings.unknown_setting_9 = Some(val);
@@ -323,8 +309,8 @@ impl Settings {
                     }
                 }
                 SettingsOrder::UnknownSetting8 => {
-                    if let Some(v) = self.unknown_setting_8 {
-                        f(UnknownSetting8(v));
+                    if let Some(v) = self.enable_connect_protocol {
+                        f(EnableConnectProtocol(v));
                     }
                 }
                 SettingsOrder::UnknownSetting9 => {
@@ -344,10 +330,6 @@ impl Settings {
                 }
             }
         }
-
-        if let Some(v) = self.enable_connect_protocol {
-            f(EnableConnectProtocol(v));
-        }
     }
 }
 
@@ -384,9 +366,6 @@ impl fmt::Debug for Settings {
             Setting::EnableConnectProtocol(v) => {
                 builder.field("enable_connect_protocol", &v);
             }
-            Setting::UnknownSetting8(v) => {
-                builder.field("unknown_setting8", &v);
-            }
             Setting::UnknownSetting9(v) => {
                 builder.field("unknown_setting9", &v);
             }
@@ -445,7 +424,6 @@ impl Setting {
             MaxFrameSize(v) => (5, v),
             MaxHeaderListSize(v) => (6, v),
             EnableConnectProtocol(v) => (8, v),
-            UnknownSetting8(v) => (8, v),
             UnknownSetting9(v) => (9, v),
         };