diff --git a/Source/WebKit/GPUProcess/media/cocoa/RemoteMediaPlayerManagerProxyCocoa.mm b/Source/WebKit/GPUProcess/media/cocoa/RemoteMediaPlayerManagerProxyCocoa.mm
index 3573ce54be3f3..e1b7b6125d8e4 100644
--- a/Source/WebKit/GPUProcess/media/cocoa/RemoteMediaPlayerManagerProxyCocoa.mm
+++ b/Source/WebKit/GPUProcess/media/cocoa/RemoteMediaPlayerManagerProxyCocoa.mm
@@ -47,7 +47,7 @@
 void RemoteMediaPlayerManagerProxy::handleVideoReceiverEndpointMessage(const VideoReceiverEndpointMessage& endpointMessage)
 {
     ASSERT(endpointMessage.mediaElementIdentifier().isValid());
-    if (!endpointMessage.mediaElementIdentifier().isValid)
+    if (!endpointMessage.mediaElementIdentifier().isValid())
         return;
 
     auto cachedEntry = m_videoReceiverEndpointCache.find(endpointMessage.mediaElementIdentifier());