diff --git a/src/posix/cocoa/i_video.mm b/src/posix/cocoa/i_video.mm
index 682b2239c..46d7a3a48 100644
--- a/src/posix/cocoa/i_video.mm
+++ b/src/posix/cocoa/i_video.mm
@@ -561,7 +561,7 @@ void SystemBaseFrameBuffer::SetMode(const bool fullscreen, const bool hiDPI)
 {
 	assert(m_window.screen != nil);
 	assert(m_window.contentView.layer != nil);
-	m_window.contentView.layer.contentsScale = hiDPI ? m_window.screen.backingScaleFactor : 1.0;
+	[m_window.contentView layer].contentsScale = hiDPI ? m_window.screen.backingScaleFactor : 1.0;
 
 	if (fullscreen)
 	{