diff --git a/hypgraph.cpp b/hypgraph.cpp
index a19a8126..b2a9d854 100644
--- a/hypgraph.cpp
+++ b/hypgraph.cpp
@@ -1059,7 +1059,7 @@ void centerpc(ld aspd) {
   ors::unrotate(cwtV); ors::unrotate(View);
   
   hyperpoint H = ypush(-vid.yshift) * sphereflip * tC0(cwtV);
-  ld R = zero_d(H, 2) ? 0 : hdist0(H); // = sqrt(H[0] * H[0] + H[1] * H[1]);
+  ld R = zero_d(H, DIM) ? 0 : hdist0(H);
   if(R < 1e-9) {
     // either already centered or direction unknown
     /* if(playerfoundL && playerfoundR) {