diff --git a/integration/vscode/ada/src/taskProviders.ts b/integration/vscode/ada/src/taskProviders.ts
index be8e6dd17..be24b4458 100644
--- a/integration/vscode/ada/src/taskProviders.ts
+++ b/integration/vscode/ada/src/taskProviders.ts
@@ -80,7 +80,8 @@ async function computeProject(taskDef?: CustomTaskDefinition): Promise<string> {
 
 // Call commonArgs on args and append `-gnatef` to generate full file names in errors/warnings
 export const getDiagnosticArgs = (): string[] => {
-    const p_gnatef = ['-cargs', '-gnatef'];
+    const p_gnatef = ['"-cargs:ada"', '-gnatef'];
+    //  PowerShell splits arguments on `:`, so we need extra quotes around `-cargs:ada`
     return p_gnatef;
 };
 
diff --git a/integration/vscode/ada/test/suite/general/tasks.test.ts b/integration/vscode/ada/test/suite/general/tasks.test.ts
index 8f5b6335e..0b00c8aab 100644
--- a/integration/vscode/ada/test/suite/general/tasks.test.ts
+++ b/integration/vscode/ada/test/suite/general/tasks.test.ts
@@ -84,7 +84,7 @@ suite('GPR Tasks Provider', function () {
         const exec = resolved.execution as vscode.ShellExecution;
         const actualCmd = [exec.command].concat(exec.args).join(' ');
 
-        const expectedCmd = `gprbuild -P ${def.configuration.projectFile} -cargs -gnatef`;
+        const expectedCmd = `gprbuild -P ${def.configuration.projectFile} "-cargs:ada" -gnatef`;
 
         assert.strictEqual(actualCmd, expectedCmd);
     });
@@ -111,7 +111,7 @@ suite('GPR Tasks Provider', function () {
 
         const expectedCmd = `gprbuild -P ${def.configuration.projectFile} ${
             def.configuration.main ?? ''
-        } -cargs -gnatef`;
+        } "-cargs:ada" -gnatef`;
 
         assert.strictEqual(actualCmd, expectedCmd);
     });
@@ -140,7 +140,7 @@ suite('GPR Tasks Provider', function () {
         // via project attributes
         const expectedCmd = `gprbuild -P ${def.configuration.projectFile} ${
             def.configuration.main ?? ''
-        } -cargs -gnatef && obj/main1exec${process.platform == 'win32' ? '.exe' : ''}`;
+        } "-cargs:ada" -gnatef && obj/main1exec${process.platform == 'win32' ? '.exe' : ''}`;
 
         assert.strictEqual(actualCmd, expectedCmd);
     });
diff --git a/source/client/lsp-raw_clients.adb b/source/client/lsp-raw_clients.adb
index 7e3003322..7c59cd9e7 100644
--- a/source/client/lsp-raw_clients.adb
+++ b/source/client/lsp-raw_clients.adb
@@ -139,6 +139,15 @@ package body LSP.Raw_Clients is
       return Self.Server.Identifier;
    end Server_PID;
 
+   ------------------
+   -- Kill_Process --
+   ------------------
+
+   procedure Kill_Process (Self : in out Raw_Client'Class) is
+   begin
+      Self.Server.Kill_Process;
+   end Kill_Process;
+
    -------------------
    -- Set_Arguments --
    -------------------
diff --git a/source/client/lsp-raw_clients.ads b/source/client/lsp-raw_clients.ads
index 93442e6ed..203dc2495 100644
--- a/source/client/lsp-raw_clients.ads
+++ b/source/client/lsp-raw_clients.ads
@@ -112,11 +112,17 @@ package LSP.Raw_Clients is
 
    function Can_Send_Message (Self : Raw_Client'Class) return Boolean;
    --  Return True when server's process is running and send queue is empty,
-   --  thus send operation can start immidiately.
+   --  thus send operation can start immediately.
 
    function Server_PID (Self : Raw_Client'Class) return String;
    --  Return server process id (pid) if the server has been started.
 
+   procedure Kill_Process (Self : in out Raw_Client'Class);
+   --  Kill current server process. Process will exit immediately.
+   --
+   --  On Windows, TerminateProcess() is called, and on POSIX, the SIGKILL
+   --  signal is sent.
+
 private
    type Listener (Client : access Raw_Client'Class) is limited
      new Spawn.Processes.Process_Listener with null record;