diff --git a/code/renderer/tr_bsp.c b/code/renderer/tr_bsp.c
index b0cbe50d..85909baa 100644
--- a/code/renderer/tr_bsp.c
+++ b/code/renderer/tr_bsp.c
@@ -1214,7 +1214,7 @@ void R_MovePatchSurfacesToHunk(void) {
 		Com_Memcpy( hunkgrid->widthLodError, grid->widthLodError, grid->width * 4 );
 
 		hunkgrid->heightLodError = ri.Hunk_Alloc( grid->height * 4, h_low );
-		Com_Memcpy( grid->heightLodError, grid->heightLodError, grid->height * 4 );
+		Com_Memcpy( hunkgrid->heightLodError, grid->heightLodError, grid->height * 4 );
 
 		R_FreeSurfaceGridMesh( grid );