diff --git a/extensions/image-preview/src/preview.ts b/extensions/image-preview/src/preview.ts
index 7c3a1ad2a6c8fa764b0f4863a444062a8157be92..43a84751885706e37954debdc123a46a69bd5a1a 100644
--- a/extensions/image-preview/src/preview.ts
+++ b/extensions/image-preview/src/preview.ts
@@ -55,7 +55,9 @@ export class Preview extends Disposable {
 		}));
 
 		this._register(zoomStatusBarEntry.onDidChangeScale(e => {
-			this.webviewEditor.webview.postMessage({ type: 'setScale', scale: e.scale });
+			if (this._active && !this._isWebviewDispose) {
+				this.webviewEditor.webview.postMessage({ type: 'setScale', scale: e.scale });
+			}
 		}));
 
 		this._register(webviewEditor.onDidChangeViewState(() => {