diff --git a/binary-tiling.cpp b/binary-tiling.cpp
index 94aa40e3..c92f53ce 100644
--- a/binary-tiling.cpp
+++ b/binary-tiling.cpp
@@ -508,7 +508,7 @@ EX namespace binary {
       return res;
       }
     
-    ld spin_angle(cell *c, int d) {
+    ld spin_angle(cell *c, int d) override {
       if(WDIM == 3 || geometry == gBinary4 || geometry == gTernary) {
         return hrmap::spin_angle(c, d);
         }
@@ -545,7 +545,7 @@ EX namespace binary {
 
     const transmatrix iadj(heptagon *h, int dir) { heptagon *h1 = h->cmove(dir); return adj(h1, h->c.spin(dir)); }
   
-    transmatrix adj(cell *c, int dir) { return adj(c->master, dir); }    
+    transmatrix adj(cell *c, int dir) override { return adj(c->master, dir); }
 
     void virtualRebase(heptagon*& base, transmatrix& at) override {
     
diff --git a/cell.cpp b/cell.cpp
index dc41a8ce..4a7b6092 100644
--- a/cell.cpp
+++ b/cell.cpp
@@ -73,10 +73,10 @@ struct hrmap_standard : hrmap {
   void draw() override;
   transmatrix relative_matrix(cell *c2, cell *c1, const hyperpoint& point_hint) override;
   heptagon *create_step(heptagon *h, int direction) override;
-  transmatrix adj(cell *c, int d);
+  transmatrix adj(cell *c, int d) override;
   transmatrix adj(heptagon *h, int d);
   transmatrix iadj(heptagon *h, int d) { return adj(h->cmove(d), h->c.spin(d)); }
-  ld spin_angle(cell *c, int d);
+  ld spin_angle(cell *c, int d) override;
   double spacedist(cell *c, int i) override;
   };
 
diff --git a/nonisotropic.cpp b/nonisotropic.cpp
index 39dfecd8..180ee693 100644
--- a/nonisotropic.cpp
+++ b/nonisotropic.cpp
@@ -1060,8 +1060,8 @@ EX namespace hybrid {
       for(auto& p: at) tailored_delete(p.second);
       }
   
-    virtual transmatrix spin_to(cell *c, int d, ld bonus) { c = get_where(c).first; return in_underlying([&] { return currentmap->spin_to(c, d, bonus); }); }
-    virtual transmatrix spin_from(cell *c, int d, ld bonus) { c = get_where(c).first; return in_underlying([&] { return currentmap->spin_from(c, d, bonus); }); }
+    virtual transmatrix spin_to(cell *c, int d, ld bonus) override { c = get_where(c).first; return in_underlying([&] { return currentmap->spin_to(c, d, bonus); }); }
+    virtual transmatrix spin_from(cell *c, int d, ld bonus) override { c = get_where(c).first; return in_underlying([&] { return currentmap->spin_from(c, d, bonus); }); }
 
     };