diff --git a/submodules/WebUI/Sources/WebAppWebView.swift b/submodules/WebUI/Sources/WebAppWebView.swift
index f1be891cc92..520f6860a57 100644
--- a/submodules/WebUI/Sources/WebAppWebView.swift
+++ b/submodules/WebUI/Sources/WebAppWebView.swift
@@ -227,7 +227,7 @@ final class WebAppWebView: WKWebView {
     }
     
     func sendEvent(name: String, data: String?) {
-        let script = "window.TelegramGameProxy.receiveEvent(\"\(name)\", \(data ?? "null"))"
+        let script = "window.TelegramGameProxy && window.TelegramGameProxy.receiveEvent && window.TelegramGameProxy.receiveEvent(\"\(name)\", \(data ?? "null"))"
         self.evaluateJavaScript(script, completionHandler: { _, _ in
         })
     }