diff --git a/webrtc/modules/video_render/mac/video_render_nsopengl.mm b/webrtc/modules/video_render/mac/video_render_nsopengl.mm
index 3410da0039..0659496261 100644
--- a/webrtc/modules/video_render/mac/video_render_nsopengl.mm
+++ b/webrtc/modules/video_render/mac/video_render_nsopengl.mm
@@ -64,7 +64,7 @@ VideoChannelNSOpenGL::~VideoChannelNSOpenGL()
 
 int VideoChannelNSOpenGL::ChangeContext(NSOpenGLContext *nsglContext)
 {
-    _owner->UnlockAGLCntx();
+    _owner->LockAGLCntx();
 
     _nsglContext = nsglContext;
     [_nsglContext makeCurrentContext];