diff --git a/src/vs/workbench/api/common/extHost.api.impl.ts b/src/vs/workbench/api/common/extHost.api.impl.ts
index cd6e15cbed9..66dc4868670 100644
--- a/src/vs/workbench/api/common/extHost.api.impl.ts
+++ b/src/vs/workbench/api/common/extHost.api.impl.ts
@@ -310,6 +310,7 @@ export function createApiFactoryAndRegisterActors(accessor: ServicesAccessor): I
 				return extHostTerminalService.getDefaultShell(false);
 			},
 			get onDidChangeShell() {
+				checkProposedApiEnabled(extension, 'envShellEvent');
 				return extHostTerminalService.onDidChangeShell;
 			},
 			get isTelemetryEnabled() {