diff --git a/ios/Classes/InAppWebViewMethodHandler.swift b/ios/Classes/InAppWebViewMethodHandler.swift
index 33d80f29..ca13aa8c 100644
--- a/ios/Classes/InAppWebViewMethodHandler.swift
+++ b/ios/Classes/InAppWebViewMethodHandler.swift
@@ -290,7 +290,7 @@ public class InAppWebViewMethodHandler: FlutterMethodCallDelegate {
                 break
             case "zoomBy":
                 let zoomFactor = (arguments!["zoomFactor"] as! NSNumber).floatValue
-                let animated = arguments!["iosAnimated"] as! Bool
+                let animated = arguments!["animated"] as! Bool
                 webView?.zoomBy(zoomFactor: zoomFactor, animated: animated)
                 result(true)
                 break