diff --git a/graph.cpp b/graph.cpp
index aadd5459..4b1e1f20 100644
--- a/graph.cpp
+++ b/graph.cpp
@@ -5084,8 +5084,9 @@ EX void drawcell(cell *c, transmatrix V, int spinv, bool mirrored) {
     }
   if(just_gmatrix) return;
 #if MAXMDIM >= 4
-  if(WDIM == 3 && pmodel == mdPerspective && !nonisotropic) {
+  if(WDIM == 3 && pmodel == mdPerspective && !nonisotropic && !(prod && product::product_sphere())) {
     hyperpoint H = tC0(V);
+    if(prod) H = product::inverse_exp(H);
     for(hyperpoint& cpoint: clipping_planes) if((H|cpoint) < -sin_auto(cgi.corner_bonus)) {
       drawcell_in_radar(c, V);
       return;