diff --git a/.github/workflows/flutter-build.yml b/.github/workflows/flutter-build.yml
index e732a2a30..b1c4c577c 100644
--- a/.github/workflows/flutter-build.yml
+++ b/.github/workflows/flutter-build.yml
@@ -545,19 +545,22 @@ jobs:
               arch: x86_64,
               target: x86_64-unknown-linux-gnu,
               os: ubuntu-20.04,
-              extra-build-features: "linux_headless",
+              extra-build-features: "",
+              enable-headless: true
             }
           - {
               arch: x86_64,
               target: x86_64-unknown-linux-gnu,
               os: ubuntu-20.04,
               extra-build-features: "flatpak",
+              enable-headless: false
             }
           - {
               arch: x86_64,
               target: x86_64-unknown-linux-gnu,
               os: ubuntu-20.04,
               extra-build-features: "appimage",
+              enable-headless: false
             }
           # - { target: x86_64-unknown-linux-musl   , os: ubuntu-20.04, use-cross: true }
     steps:
@@ -681,7 +684,11 @@ jobs:
               x86_64)
                 # no need mock on x86_64
                 export VCPKG_ROOT=/opt/artifacts/vcpkg
-                cargo build --lib --features hwcodec,flutter,flutter_texture_render,${{ matrix.job.extra-build-features }} --release
+                export DEFAULT_FEAT=""
+                if ${{ matrix.job.enable-headless }}; then
+                  export DEFAULT_FEAT=linux_headless
+                fi
+                cargo build --lib --features hwcodec,flutter,flutter_texture_render,${{ matrix.job.extra-build-features }},$DEFAULT_FEAT --release
                 ;;
             esac
 
@@ -706,6 +713,7 @@ jobs:
               os: ubuntu-20.04, # just for naming package, not running host
               use-cross: true,
               extra-build-features: "",
+              enable-headless: true
             }
           - {
               arch: aarch64,
@@ -713,6 +721,7 @@ jobs:
               os: ubuntu-20.04, # just for naming package, not running host
               use-cross: true,
               extra-build-features: "appimage",
+              enable-headless: false
             }
           # - { arch: aarch64, target: aarch64-unknown-linux-gnu   , os: ubuntu-20.04, use-cross: true, extra-build-features: "flatpak" }
           # - {
@@ -839,7 +848,11 @@ jobs:
             # start build
             pushd /workspace
             export VCPKG_ROOT=/opt/artifacts/vcpkg
-            cargo build --lib --features flutter,${{ matrix.job.extra-build-features }} --release
+            export DEFAULT_FEAT=""
+            if ${{ matrix.job.enable-headless }}; then
+              export DEFAULT_FEAT=linux_headless
+            fi
+            cargo build --lib --features flutter,${{ matrix.job.extra-build-features }},$DEFAULT_FEAT --release
 
       - name: Upload Artifacts
         uses: actions/upload-artifact@master
@@ -863,6 +876,7 @@ jobs:
               os: ubuntu-latest,
               use-cross: true,
               extra-build-features: "",
+              enable-headless: true
             }
           # - { arch: armv7, target: armv7-unknown-linux-gnueabihf , os: ubuntu-20.04, use-cross: true, extra-build-features: "appimage" }
           # - { target: arm-unknown-linux-musleabihf, os: ubuntu-20.04, use-cross: true }
@@ -968,7 +982,11 @@ jobs:
             python3 ./res/inline-sciter.py
             export VCPKG_ROOT=/opt/artifacts/vcpkg
             export ARCH=armhf
-            cargo build --features inline --release --bins
+            export DEFAULT_FEAT=""
+            if ${{ matrix.job.enable-headless }}; then
+              export DEFAULT_FEAT=linux_headless
+            fi
+            cargo build --features inline,${{ matrix.job.extra-build-features }},$DEFAULT_FEAT --release --bins
             # package
             mkdir -p ./Release
             mv ./target/release/rustdesk ./Release/rustdesk
diff --git a/res/PKGBUILD b/res/PKGBUILD
index 8d0816d7f..2b520332e 100644
--- a/res/PKGBUILD
+++ b/res/PKGBUILD
@@ -7,7 +7,7 @@ arch=('x86_64')
 url=""
 license=('AGPL-3.0')
 groups=()
-depends=('gtk3' 'xdotool' 'libxcb' 'libxfixes' 'alsa-lib' 'curl' 'libva' 'libvdpau' 'libappindicator-gtk3', 'pam')
+depends=('gtk3' 'xdotool' 'libxcb' 'libxfixes' 'alsa-lib' 'curl' 'libva' 'libvdpau' 'libappindicator-gtk3' 'pam')
 makedepends=()
 checkdepends=()
 optdepends=()
diff --git a/src/api.rs b/src/api.rs
index f737243e7..19779995e 100644
--- a/src/api.rs
+++ b/src/api.rs
@@ -1,8 +1,10 @@
+use std::ffi::c_char;
+
 use crate::plugins::PLUGIN_REGISTRAR;
 
 // API provided by RustDesk.
-pub type LoadPluginFunc = fn(*const i8) -> i32;
-pub type UnloadPluginFunc = fn(*const i8) -> i32;
+pub type LoadPluginFunc = fn(*const c_char) -> i32;
+pub type UnloadPluginFunc = fn(*const c_char) -> i32;
 
 #[repr(C)]
 pub struct RustDeskApiTable {
@@ -11,12 +13,12 @@ pub struct RustDeskApiTable {
 }
 
 #[no_mangle]
-fn load_plugin(path: *const i8) -> i32 {
+fn load_plugin(path: *const c_char) -> i32 {
     PLUGIN_REGISTRAR.load_plugin(path)
 }
 
 #[no_mangle]
-fn unload_plugin(path: *const i8) -> i32 {
+fn unload_plugin(path: *const c_char) -> i32 {
     PLUGIN_REGISTRAR.unload_plugin(path)
 }
 
diff --git a/src/plugins.rs b/src/plugins.rs
index 7356380d3..4e44a2643 100644
--- a/src/plugins.rs
+++ b/src/plugins.rs
@@ -75,7 +75,7 @@ pub struct PluginRegistar<P: Plugin> {
 }
 
 impl<P: Plugin> PluginRegistar<P> {
-    pub fn load_plugin(&self, path: *const i8) -> i32 {
+    pub fn load_plugin(&self, path: *const c_char) -> i32 {
         let p = unsafe { CStr::from_ptr(path) };
         let lib_path = p.to_str().unwrap_or("").to_owned();
         let lib = unsafe { libloading::Library::new(lib_path.as_str()) };
@@ -100,7 +100,7 @@ impl<P: Plugin> PluginRegistar<P> {
         -1
     }
 
-    pub fn unload_plugin(&self, path: *const i8) -> i32 {
+    pub fn unload_plugin(&self, path: *const c_char) -> i32 {
         let p = unsafe { CStr::from_ptr(path) };
         let lib_path = p.to_str().unwrap_or("").to_owned();
         match PLUGIN_REGISTRAR.plugins.write().unwrap().remove(&lib_path) {