diff --git a/penrose.c b/penrose.c
index 457b3fd..df0b72e 100644
--- a/penrose.c
+++ b/penrose.c
@@ -417,11 +417,6 @@ double penrose_side_length(double start_size, int depth)
   return start_size / pow(PHI, depth);
 }
 
-void penrose_count_tiles(int depth, int *nlarge, int *nsmall)
-{
-  /* Steal sgt's fibonacci thingummy. */
-}
-
 /*
  * It turns out that an acute isosceles triangle with sides in ratio 1:phi:phi
  * has an incentre which is conveniently 2*phi^-2 of the way from the apex to
diff --git a/penrose.h b/penrose.h
index d1010b9..838364d 100644
--- a/penrose.h
+++ b/penrose.h
@@ -48,9 +48,6 @@ extern int penrose(penrose_state *state, int which, int angle);
  * gen, given a starting side length. */
 extern double penrose_side_length(double start_size, int depth);
 
-/* Returns the count of each type of tile at a given recursion depth. */
-extern void penrose_count_tiles(int gen, int *nlarge, int *nsmall);
-
 /* Calculate start size and recursion depth required to produce a
  * width-by-height sized patch of penrose tiles with the given tilesize */
 extern void penrose_calculate_size(int which, int tilesize, int w, int h,