diff --git a/src/vs/editor/contrib/codeAction/browser/codeActionController.ts b/src/vs/editor/contrib/codeAction/browser/codeActionController.ts
index 57aa30ff33f..ad34973eddf 100644
--- a/src/vs/editor/contrib/codeAction/browser/codeActionController.ts
+++ b/src/vs/editor/contrib/codeAction/browser/codeActionController.ts
@@ -289,8 +289,10 @@ export class CodeActionController extends Disposable implements IEditorContribut
 					const decorations: IModelDeltaDecoration[] = action.action.diagnostics.map(diagnostic => ({ range: diagnostic, options: CodeActionController.DECORATION }));
 					currentDecorations.set(decorations);
 					const diagnostic = action.action.diagnostics[0];
-					const selectionText = this._editor.getModel()?.getWordAtPosition({ lineNumber: diagnostic.startLineNumber, column: diagnostic.startColumn })?.word;
-					aria.status(localize('editingNewSelection', "Context: {0} at line {1} and column {2}.", selectionText, diagnostic.startLineNumber, diagnostic.startColumn));
+					if (diagnostic.startLineNumber && diagnostic.startColumn) {
+						const selectionText = this._editor.getModel()?.getWordAtPosition({ lineNumber: diagnostic.startLineNumber, column: diagnostic.startColumn })?.word;
+						aria.status(localize('editingNewSelection', "Context: {0} at line {1} and column {2}.", selectionText, diagnostic.startLineNumber, diagnostic.startColumn));
+					}
 				} else {
 					currentDecorations.clear();
 				}