diff --git a/include/qbsp/brush.hh b/include/qbsp/brush.hh
index 1cac2765..57e47c22 100644
--- a/include/qbsp/brush.hh
+++ b/include/qbsp/brush.hh
@@ -37,9 +37,6 @@ struct side_t
 
     int16_t lmshift;
 
-    qvec3d origin;
-    vec_t radius;
-
     bool onnode; // has this face been used as a BSP node plane yet?
     bool visible = true; // can any part of this side be seen from non-void parts of the level?
                          // non-visible means we can discard the brush side
diff --git a/include/qbsp/csg4.hh b/include/qbsp/csg4.hh
index d0a518a9..d3f15e5e 100644
--- a/include/qbsp/csg4.hh
+++ b/include/qbsp/csg4.hh
@@ -36,6 +36,5 @@ face_t *CopyFace(const face_t *in);
 face_t *MirrorFace(const face_t *face);
 std::tuple<face_t *, face_t *> SplitFace(face_t *in, const qplane3d &split);
 void UpdateFaceSphere(face_t *in);
-void UpdateFaceSphere(side_t *in);
 bool BrushGE(const bspbrush_t &a, const bspbrush_t &b);
 std::vector<std::unique_ptr<bspbrush_t>> ChopBrushes(const std::vector<std::unique_ptr<bspbrush_t>> &input);
diff --git a/qbsp/brush.cc b/qbsp/brush.cc
index db96de81..c931f331 100644
--- a/qbsp/brush.cc
+++ b/qbsp/brush.cc
@@ -459,7 +459,6 @@ static std::vector<side_t> CreateBrushFaces(const mapentity_t *src, hullbrush_t
         f.planenum = FindPositivePlane(plane, &f.planeside);
 
         CheckFace(&f, mapface);
-        UpdateFaceSphere(&f);
     }
 
     // Rotatable objects must have a bounding box big enough to
diff --git a/qbsp/brushbsp.cc b/qbsp/brushbsp.cc
index 495b0746..3b069bec 100644
--- a/qbsp/brushbsp.cc
+++ b/qbsp/brushbsp.cc
@@ -111,14 +111,7 @@ inline int FaceSide(const face_t *in, const qbsp_plane_t &split)
 
 inline int FaceSide(const side_t *in, const qbsp_plane_t &split)
 {
-    vec_t dist = split.distance_to(in->origin);
-
-    if (dist > in->radius)
-        return SIDE_FRONT;
-    else if (dist < -in->radius)
-        return SIDE_BACK;
-    else
-        return FaceSide__(in->w, split);
+    return FaceSide__(in->w, split);
 }
 
 /*
diff --git a/qbsp/csg4.cc b/qbsp/csg4.cc
index 4e6194ea..d7f21490 100644
--- a/qbsp/csg4.cc
+++ b/qbsp/csg4.cc
@@ -80,16 +80,6 @@ void UpdateFaceSphere(face_t *in)
     in->radius = sqrt(in->radius);
 }
 
-void UpdateFaceSphere(side_t *in)
-{
-    in->origin = in->w.center();
-    in->radius = 0;
-    for (size_t i = 0; i < in->w.size(); i++) {
-        in->radius = max(in->radius, qv::distance2(in->w[i], in->origin));
-    }
-    in->radius = sqrt(in->radius);
-}
-
 /*
 ==================
 SplitFace