diff --git a/webrtc/modules/video_render/android/video_render_android_native_opengl2.cc b/webrtc/modules/video_render/android/video_render_android_native_opengl2.cc
index 088b0b3fd6..a50ca8979a 100644
--- a/webrtc/modules/video_render/android/video_render_android_native_opengl2.cc
+++ b/webrtc/modules/video_render/android/video_render_android_native_opengl2.cc
@@ -419,7 +419,9 @@ void JNICALL AndroidNativeOpenGl2Channel::DrawNativeStatic(
 }
 
 void AndroidNativeOpenGl2Channel::DrawNative() {
+  _renderCritSect.Enter();
   _openGLRenderer.Render(_bufferToRender);
+  _renderCritSect.Leave();
 }
 
 /*