diff --git a/src/vs/workbench/api/node/extHost.api.impl.ts b/src/vs/workbench/api/node/extHost.api.impl.ts
index 8bf889401c0..192159fe5c3 100644
--- a/src/vs/workbench/api/node/extHost.api.impl.ts
+++ b/src/vs/workbench/api/node/extHost.api.impl.ts
@@ -440,9 +440,9 @@ export function createApiFactory(
 				}
 				return extHostTerminalService.createTerminal(<string>nameOrOptions, shellPath, shellArgs);
 			},
-			createTerminalRenderer(name: string): vscode.TerminalRenderer {
+			createTerminalRenderer: proposedApiFunction(extension, (name: string) => {
 				return extHostTerminalService.createTerminalRenderer(name);
-			},
+			}),
 			registerTreeDataProvider(viewId: string, treeDataProvider: vscode.TreeDataProvider<any>): vscode.Disposable {
 				return extHostTreeViews.registerTreeDataProvider(viewId, treeDataProvider);
 			},