diff --git a/terminal-sample/package.json b/terminal-sample/package.json
index 84607311..27caa13d 100644
--- a/terminal-sample/package.json
+++ b/terminal-sample/package.json
@@ -27,7 +27,8 @@
 		"onCommand:terminalTest.show",
 		"onCommand:terminalTest.showPreserveFocus",
 		"onCommand:terminalTest.terminals",
-		"onCommand:terminalTest.updateEnvironment"
+		"onCommand:terminalTest.updateEnvironment",
+		"onCommand:terminalTest.clearEnvironment"
 	],
 	"main": "./out/extension.js",
 	"contributes": {
@@ -95,6 +96,10 @@
 			{
 				"command": "terminalTest.updateEnvironment",
 				"title": "Terminal API: Update environment"
+			},
+			{
+				"command": "terminalTest.clearEnvironment",
+				"title": "Terminal API: Clear environment"
 			}
 		]
 	},
diff --git a/terminal-sample/src/extension.ts b/terminal-sample/src/extension.ts
index 2e605f77..17a370ea 100644
--- a/terminal-sample/src/extension.ts
+++ b/terminal-sample/src/extension.ts
@@ -146,10 +146,15 @@ export function activate(context: vscode.ExtensionContext) {
 	}));
 
 	context.subscriptions.push(vscode.commands.registerCommand('terminalTest.updateEnvironment', () => {
-		const collection = (<any>vscode.window).getEnvironmentVariableCollection();
+		const collection = (context as any).environmentVariableCollection;
 		collection.replace('FOO', 'BAR');
 		collection.append('PATH', '/test/path');
 	}));
+
+	context.subscriptions.push(vscode.commands.registerCommand('terminalTest.clearEnvironment', () => {
+		const collection = (context as any).environmentVariableCollection;
+		collection.clear();
+	}));
 }
 
 function colorText(text: string): string {