diff --git a/src/vs/workbench/services/userData/common/settingsSync.ts b/src/vs/workbench/services/userData/common/settingsSync.ts
index f8b6b35d144b5c25242d3ab546270a106e79bf3a..2b977404c007e099c8e94bf9bda5b684e46f4d4f 100644
--- a/src/vs/workbench/services/userData/common/settingsSync.ts
+++ b/src/vs/workbench/services/userData/common/settingsSync.ts
@@ -368,7 +368,7 @@ export class SettingsSynchroniser extends Disposable implements ISynchroniser {
 			const tree = parseTree(settingsPreviewModel.getValue());
 			const valueNode = findNodeAtLocation(tree, [key]);
 			const remoteEdit = setProperty(`{${settingsPreviewModel.getEOL()}\t${settingsPreviewModel.getEOL()}}`, [key], remote[key], { tabSize: 4, insertSpaces: false, eol: settingsPreviewModel.getEOL() })[0];
-			const remoteContent = remoteEdit ? remoteEdit.content.substring(remoteEdit.offset + remoteEdit.length + 1) + settingsPreviewModel.getEOL() : '';
+			const remoteContent = remoteEdit ? `${remoteEdit.content.substring(remoteEdit.offset + remoteEdit.length + 1)},${settingsPreviewModel.getEOL()}` : '';
 			if (valueNode) {
 				// Updated in Local and Remote with different value
 				const keyPosition = settingsPreviewModel.getPositionAt(valueNode.parent!.offset);