diff --git a/fake.cpp b/fake.cpp
index 9a3f4174..23bea690 100644
--- a/fake.cpp
+++ b/fake.cpp
@@ -34,8 +34,12 @@ EX namespace fake {
     if(arcm::in() && PURE) return true;
     if(WDIM == 2) return false;
     if(among(geometry, gBitrunc3)) return false;
+    #if MAXMDIM >= 4
     if(reg3::in() && !among(variation, eVariation::pure, eVariation::subcubes, eVariation::coxeter, eVariation::bch_oct)) return false;
     return euc::in() || reg3::in();
+    #else
+    return euc::in();
+    #endif
     }
   
   map<cell*, ld> random_order;
@@ -133,7 +137,11 @@ EX namespace fake {
         }
       transmatrix S1, S2;
       ld dist;
+      #if MAXMDIM >= 4
       bool impure = reg3::in() && !PURE;
+      #else
+      bool impure = !PURE;
+      #endif
       vector<int> mseq;
       if(impure) {
         mseq = FPIU ( currentmap->get_move_seq(c, d) );
diff --git a/reg3.cpp b/reg3.cpp
index f82ab441..66100bbd 100644
--- a/reg3.cpp
+++ b/reg3.cpp
@@ -11,7 +11,6 @@
 
 #include "hyper.h"
 namespace hr {
-#if MAXMDIM >= 4
 
 EX hyperpoint final_coords(hyperpoint h) {
   if(sn::in() || !bt::in()) 
@@ -68,6 +67,19 @@ void subcellshape::compute_hept() {
   compute_common();
   }
 
+EX namespace reg3 {
+EX void make_vertices_only(vector<hyperpoint>& vo, const vector<vector<hyperpoint>>& csh) {
+  vo.clear();
+  for(auto& v: csh)
+  for(hyperpoint h: v) {
+    bool found = false;
+    for(hyperpoint h2: vo) if(hdist(h, h2) < 1e-6) found = true;
+    if(!found) vo.push_back(h);
+    }
+  }
+EX }
+
+#if MAXMDIM >= 4
 void subcellshape::compute_sub() {
   hyperpoint gres = Hypc;
   for(auto& face: faces) {
@@ -167,16 +179,6 @@ EX namespace reg3 {
       }    
     }
 
-  EX void make_vertices_only(vector<hyperpoint>& vo, const vector<vector<hyperpoint>>& csh) {
-    vo.clear();
-    for(auto& v: csh)
-    for(hyperpoint h: v) {
-      bool found = false;
-      for(hyperpoint h2: vo) if(hdist(h, h2) < 1e-6) found = true;
-      if(!found) vo.push_back(h);
-      }
-    }
-
   EX void generate() {
 
     if(fake::in()) {