diff --git a/vp10/vp10_cx_iface.c b/vp10/vp10_cx_iface.c
index 21c9c03..63d3adc 100644
--- a/vp10/vp10_cx_iface.c
+++ b/vp10/vp10_cx_iface.c
@@ -1246,7 +1246,7 @@
   struct vp10_extracfg extra_cfg = ctx->extra_cfg;
   int *const render_size = va_arg(args, int *);
   extra_cfg.render_width  = render_size[0];
-  extra_cfg.render_height = render_size[0];
+  extra_cfg.render_height = render_size[1];
   return update_extra_cfg(ctx, &extra_cfg);
 }