diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index 2f085195928..75adfb95d9c 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -1653,17 +1653,17 @@ declare module 'vscode' {
 		asWebviewUri(localResource: Uri): Uri;
 
 		/**
-		 * A controller can set priorities for specific notebook documents. This allows a controller to be the
-		 * preferred controller for certain notebooks.
+		 * A controller can set affinities for specific notebook documents. This allows a controller
+		 * to be more important for some notebooks.
 		 *
 		 * @param notebook The notebook for which a priority is set.
-		 * @param priority A controller priority
+		 * @param affinity A controller affinity
 		 */
 		// todo@API maybe Affinity instead of Priority
-		updateNotebookPriority(notebook: NotebookDocument, priority: NotebookControllerPriority): void;
+		updateNotebookAffinity(notebook: NotebookDocument, affinity: NotebookControllerAffinity): void;
 	}
 
-	export enum NotebookControllerPriority {
+	export enum NotebookControllerAffinity {
 		Default = 1,
 		Preferred = 2
 	}
diff --git a/src/vs/workbench/api/common/extHost.api.impl.ts b/src/vs/workbench/api/common/extHost.api.impl.ts
index 2ae8bd58dda..1bfd345a466 100644
--- a/src/vs/workbench/api/common/extHost.api.impl.ts
+++ b/src/vs/workbench/api/common/extHost.api.impl.ts
@@ -1253,7 +1253,7 @@ export function createApiFactoryAndRegisterActors(accessor: ServicesAccessor): I
 			NotebookCellOutput: extHostTypes.NotebookCellOutput,
 			NotebookCellOutputItem: extHostTypes.NotebookCellOutputItem,
 			NotebookCellStatusBarItem: extHostTypes.NotebookCellStatusBarItem,
-			NotebookControllerPriority: extHostTypes.NotebookControllerPriority,
+			NotebookControllerAffinity: extHostTypes.NotebookControllerAffinity,
 			LinkedEditingRanges: extHostTypes.LinkedEditingRanges,
 			TestItemStatus: extHostTypes.TestItemStatus,
 			TestResultState: extHostTypes.TestResultState,
diff --git a/src/vs/workbench/api/common/extHostNotebookKernels.ts b/src/vs/workbench/api/common/extHostNotebookKernels.ts
index 65886849975..ca73b5b5147 100644
--- a/src/vs/workbench/api/common/extHostNotebookKernels.ts
+++ b/src/vs/workbench/api/common/extHostNotebookKernels.ts
@@ -173,7 +173,7 @@ export class ExtHostNotebookKernels implements ExtHostNotebookKernelsShape {
 				return asWebviewUri(that._initData.environment, String(handle), uri);
 			},
 			// --- priority
-			updateNotebookPriority(notebook, priority) {
+			updateNotebookAffinity(notebook, priority) {
 				that._proxy.$updateNotebookPriority(handle, notebook.uri, priority);
 			}
 		};
diff --git a/src/vs/workbench/api/common/extHostTypes.ts b/src/vs/workbench/api/common/extHostTypes.ts
index 5887eb4b128..b25ed3e01a8 100644
--- a/src/vs/workbench/api/common/extHostTypes.ts
+++ b/src/vs/workbench/api/common/extHostTypes.ts
@@ -3164,7 +3164,7 @@ export class NotebookCellStatusBarItem {
 }
 
 
-export enum NotebookControllerPriority {
+export enum NotebookControllerAffinity {
 	Default = 1,
 	Preferred = 2
 }