diff --git a/src/vs/vscode.d.ts b/src/vs/vscode.d.ts
index 2c54a462802..16efd0d855f 100644
--- a/src/vs/vscode.d.ts
+++ b/src/vs/vscode.d.ts
@@ -6269,6 +6269,28 @@ declare module 'vscode' {
 		 * @returns A promise indicating if open was successful.
 		 */
 		export function openExternal(target: Uri): Thenable<boolean>;
+
+		/**
+		 * Resolves an *external* uri, such as a `http:` or `https:` link, from where the extension is running to a
+		 * uri to the same resource on the client machine.
+		 *
+		 * This is a no-op if the extension is running on the client machine. Currently only supports
+		 * `https:` and `http:` uris.
+		 *
+		 * If the extension is running remotely, this function automatically establishes a port forwarding tunnel
+		 * from the local machine to `target` on the remote and returns a local uri to the tunnel. The lifetime of
+		 * the port fowarding tunnel is managed by VS Code and the tunnel can be closed by the user.
+		 *
+		 * Extensions should not cache the result of `asExternalUri` as the resolved uri may become invalid due to
+		 * a system or user action — for example, in remote cases, a user may close a port forwardng tunnel
+		 * that was opened by `asExternalUri`.
+		 *
+		 * Note: uris passed through `openExternal` are automatically resolved and you should not call `asExternalUri`
+		 * on them.
+		 *
+		 * @return A uri that can be used on the client machine.
+		 */
+		export function asExternalUri(target: Uri): Thenable<Uri>;
 	}
 
 	/**
diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index a262be9e137..23ea710e6b3 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -1065,32 +1065,4 @@ declare module 'vscode' {
 	}
 
 	//#endregion
-
-	// #region asExternalUri — mjbvz
-
-	namespace env {
-		/**
-		 * Resolves an *external* uri, such as a `http:` or `https:` link, from where the extension is running to a
-		 * uri to the same resource on the client machine.
-		 *
-		 * This is a no-op if the extension is running on the client machine. Currently only supports
-		 * `https:` and `http:` uris.
-		 *
-		 * If the extension is running remotely, this function automatically establishes a port forwarding tunnel
-		 * from the local machine to `target` on the remote and returns a local uri to the tunnel. The lifetime of
-		 * the port fowarding tunnel is managed by VS Code and the tunnel can be closed by the user.
-		 *
-		 * Extensions should not cache the result of `asExternalUri` as the resolved uri may become invalid due to
-		 * a system or user action — for example, in remote cases, a user may close a port forwardng tunnel
-		 * that was opened by `asExternalUri`.
-		 *
-		 * Note: uris passed through `openExternal` are automatically resolved and you should not call `asExternalUri`
-		 * on them.
-		 *
-		 * @return A uri that can be used on the client machine.
-		 */
-		export function asExternalUri(target: Uri): Thenable<Uri>;
-	}
-
-	//#endregion
 }
diff --git a/src/vs/workbench/api/common/extHost.api.impl.ts b/src/vs/workbench/api/common/extHost.api.impl.ts
index e5b5d50ff01..382a762d930 100644
--- a/src/vs/workbench/api/common/extHost.api.impl.ts
+++ b/src/vs/workbench/api/common/extHost.api.impl.ts
@@ -248,7 +248,6 @@ export function createApiFactoryAndRegisterActors(accessor: ServicesAccessor): I
 				return extHostWindow.openUri(uri, { allowTunneling: !!initData.remote.isRemote });
 			},
 			asExternalUri(uri: URI) {
-				checkProposedApiEnabled(extension);
 				return extHostWindow.asExternalUri(uri, { allowTunneling: !!initData.remote.isRemote });
 			},
 			get remoteName() {