diff --git a/extensions/typescript-language-features/src/features/refactor.ts b/extensions/typescript-language-features/src/features/refactor.ts
index a6ed687fbc2..3ccb5969913 100644
--- a/extensions/typescript-language-features/src/features/refactor.ts
+++ b/extensions/typescript-language-features/src/features/refactor.ts
@@ -314,7 +314,9 @@ class TypeScriptRefactorProvider implements vscode.CodeActionProvider {
 	private appendInvalidActions(actions: vscode.CodeAction[]): vscode.CodeAction[] {
 		if (!actions.some(action => action.kind && Extract_Constant.kind.contains(action.kind))) {
 			const disabledAction = new vscode.CodeAction('Extract to constant', Extract_Constant.kind);
-			disabledAction.disabled = localize('extract.disabled', "The current selection cannot be extracted");
+			disabledAction.disabled = {
+				reason: localize('extract.disabled', "The current selection cannot be extracted"),
+			};
 			disabledAction.isPreferred = true;
 			actions.push(disabledAction);
 		}
diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index 09a9d256f0f..36683346748 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -1331,10 +1331,16 @@ declare module 'vscode' {
 		/**
 		 * Marks that the code action cannot currently be applied.
 		 *
-		 * This should be a human readable description of why the code action is currently disabled. Disabled code actions
-		 * will be surfaced in the refactor UI but cannot be applied.
+		 * Disabled code actions will be surfaced in the refactor UI but cannot be applied.
 		 */
-		disabled?: string;
+		disabled?: {
+			/**
+			 * Human readable description of why the code action is currently disabled.
+			 *
+			 * This is displayed in the UI.
+			 */
+			reason: string;
+		};
 	}
 
 	//#endregion
diff --git a/src/vs/workbench/api/common/extHostLanguageFeatures.ts b/src/vs/workbench/api/common/extHostLanguageFeatures.ts
index bd569e64b04..a9482c1616c 100644
--- a/src/vs/workbench/api/common/extHostLanguageFeatures.ts
+++ b/src/vs/workbench/api/common/extHostLanguageFeatures.ts
@@ -389,7 +389,7 @@ class CodeActionAdapter {
 						edit: candidate.edit && typeConvert.WorkspaceEdit.from(candidate.edit),
 						kind: candidate.kind && candidate.kind.value,
 						isPreferred: candidate.isPreferred,
-						disabled: candidate.disabled
+						disabled: candidate.disabled?.reason
 					});
 				}
 			}