diff --git a/src/vs/workbench/contrib/notebook/browser/view/output/transforms/textHelper.ts b/src/vs/workbench/contrib/notebook/browser/view/output/transforms/textHelper.ts
index 9168ed504ff9..b3a6b38b1153 100644
--- a/src/vs/workbench/contrib/notebook/browser/view/output/transforms/textHelper.ts
+++ b/src/vs/workbench/contrib/notebook/browser/view/output/transforms/textHelper.ts
@@ -88,7 +88,7 @@ export function truncatedArrayOfString(container: HTMLElement, outputs: string[]
 
 	if (buffer.getLineCount() < LINES_LIMIT) {
 		const lineCount = buffer.getLineCount();
-		const fullRange = new Range(1, 1, lineCount, buffer.getLineLength(lineCount));
+		const fullRange = new Range(1, 1, lineCount, buffer.getLineLastNonWhitespaceColumn(lineCount));
 
 		container.innerText = buffer.getValueInRange(fullRange, EndOfLinePreference.TextDefined);
 		return;