diff --git a/client/renderers/opengl.c b/client/renderers/opengl.c
index 90d2ba32..b53a1dde 100644
--- a/client/renderers/opengl.c
+++ b/client/renderers/opengl.c
@@ -633,8 +633,8 @@ bool lgr_opengl_render(void * opaque)
   }
 
   // wait for vsync
-//  unsigned int count;
-//  glXWaitVideoSyncSGI(1, 0, &count);
+  unsigned int count;
+  glXWaitVideoSyncSGI(1, 0, &count);
 
   glDisable(GL_SCISSOR_TEST);
   glClear(GL_COLOR_BUFFER_BIT);