diff --git a/inst/include/h3libapi.h b/inst/include/h3libapi.h
index c4fae62..838b9b4 100644
--- a/inst/include/h3libapi.h
+++ b/inst/include/h3libapi.h
@@ -587,42 +587,42 @@ Direction(*fun)(H3Index, H3Index) =
 return fun(origin, destination);
 }
 
-inline void _geoToFaceIjk(const LatLng *g, int res, FaceIJK *h) {
-  void(*fun)(const LatLng*, int, FaceIJK*) =
-    (void(*)(const LatLng*, int, FaceIJK*)) R_GetCCallable("h3lib", "_geoToFaceIjk");
-  fun(g, res, h);
-}
-
-
-inline void _faceIjkToGeo(const FaceIJK *h, int res, LatLng *g) {
-  void(*fun)(const FaceIJK*, int, LatLng*) =
-    (void(*)(const FaceIJK*, int, LatLng*)) R_GetCCallable("h3lib", "_faceIjkToGeo");
-  fun(h, res, g);
-}
-
-inline void _geoToHex2d(const LatLng *g, int res, int *face, Vec2d *v) {
-  void(*fun)(const LatLng*, int, int*, Vec2d*) =
-    (void(*)(const LatLng*, int, int*, Vec2d*)) R_GetCCallable("h3lib", "_geoToHex2d");
-  fun(g, res, face, v);
-}
-
-inline void _hex2dToCoordIJK(const Vec2d *v, CoordIJK *h) {
-  void(*fun)(const Vec2d*, CoordIJK*) =
-    (void(*)(const Vec2d*, CoordIJK*)) R_GetCCallable("h3lib", "_hex2dToCoordIJK");
-  fun(v, h);
-}
-
-inline H3Error _h3ToFaceIjk(H3Index h, FaceIJK *fijk) {
-  H3Error(*fun)(H3Index, FaceIJK*) =
-    (H3Error(*)(H3Index, FaceIJK*)) R_GetCCallable("h3lib", "_h3ToFaceIjk");
-  return fun(h, fijk);
-}
-
-inline H3Index _faceIjkToH3(const FaceIJK *fijk, int res) {
-  H3Index(*fun)(const FaceIJK*, int) =
-    (H3Index(*)(const FaceIJK*, int)) R_GetCCallable("h3lib", "_faceIjkToH3");
-  return fun(fijk, res);
-}
+// inline void _geoToFaceIjk(const LatLng *g, int res, FaceIJK *h) {
+//   void(*fun)(const LatLng*, int, FaceIJK*) =
+//     (void(*)(const LatLng*, int, FaceIJK*)) R_GetCCallable("h3lib", "_geoToFaceIjk");
+//   fun(g, res, h);
+// }
+//
+//
+// inline void _faceIjkToGeo(const FaceIJK *h, int res, LatLng *g) {
+//   void(*fun)(const FaceIJK*, int, LatLng*) =
+//     (void(*)(const FaceIJK*, int, LatLng*)) R_GetCCallable("h3lib", "_faceIjkToGeo");
+//   fun(h, res, g);
+// }
+//
+// inline void _geoToHex2d(const LatLng *g, int res, int *face, Vec2d *v) {
+//   void(*fun)(const LatLng*, int, int*, Vec2d*) =
+//     (void(*)(const LatLng*, int, int*, Vec2d*)) R_GetCCallable("h3lib", "_geoToHex2d");
+//   fun(g, res, face, v);
+// }
+//
+// inline void _hex2dToCoordIJK(const Vec2d *v, CoordIJK *h) {
+//   void(*fun)(const Vec2d*, CoordIJK*) =
+//     (void(*)(const Vec2d*, CoordIJK*)) R_GetCCallable("h3lib", "_hex2dToCoordIJK");
+//   fun(v, h);
+// }
+//
+// inline H3Error _h3ToFaceIjk(H3Index h, FaceIJK *fijk) {
+//   H3Error(*fun)(H3Index, FaceIJK*) =
+//     (H3Error(*)(H3Index, FaceIJK*)) R_GetCCallable("h3lib", "_h3ToFaceIjk");
+//   return fun(h, fijk);
+// }
+//
+// inline H3Index _faceIjkToH3(const FaceIJK *fijk, int res) {
+//   H3Index(*fun)(const FaceIJK*, int) =
+//     (H3Index(*)(const FaceIJK*, int)) R_GetCCallable("h3lib", "_faceIjkToH3");
+//   return fun(fijk, res);
+// }
 
 inline H3Error cellToLocalIjk(H3Index origin, H3Index h3, CoordIJK *out) {
   H3Index(*fun)(H3Index, H3Index, CoordIJK*) =
@@ -636,11 +636,11 @@ inline void _geoToClosestFace(const LatLng *g, int *face, double *sqd) {
   fun(g, face, sqd);
 }
 
-inline void _ijkToHex2d(const CoordIJK *h, Vec2d *v) {
-  void(*fun)(const CoordIJK*, Vec2d*) =
-    (void(*)(const CoordIJK*, Vec2d*)) R_GetCCallable("h3lib", "_ijkToHex2d");
-  fun(h, v);
-}
+// inline void _ijkToHex2d(const CoordIJK *h, Vec2d *v) {
+//   void(*fun)(const CoordIJK*, Vec2d*) =
+//     (void(*)(const CoordIJK*, Vec2d*)) R_GetCCallable("h3lib", "_ijkToHex2d");
+//   fun(h, v);
+// }
 
 #ifdef __cplusplus
 }
diff --git a/src/init.c b/src/init.c
index c138611..fc67852 100644
--- a/src/init.c
+++ b/src/init.c
@@ -97,15 +97,15 @@ void attribute_visible R_init_h3lib(DllInfo *info)
 
   // Non-API
   R_RegisterCCallable("h3lib", "directionForNeighbor",        (DL_FUNC) &directionForNeighbor);
-  R_RegisterCCallable("h3lib", "_geoToFaceIjk",               (DL_FUNC) &_geoToFaceIjk);
-  R_RegisterCCallable("h3lib", "_hex2dToCoordIJK",            (DL_FUNC) &_hex2dToCoordIJK);
-  R_RegisterCCallable("h3lib", "_faceIjkToGeo",               (DL_FUNC) &_faceIjkToGeo);
-  R_RegisterCCallable("h3lib", "_geoToHex2d",                 (DL_FUNC) &_geoToHex2d);
-  R_RegisterCCallable("h3lib", "_h3ToFaceIjk",                (DL_FUNC) &_h3ToFaceIjk);
-  R_RegisterCCallable("h3lib", "_faceIjkToH3",                (DL_FUNC) &_faceIjkToH3);
-  R_RegisterCCallable("h3lib", "cellToLocalIjk",              (DL_FUNC) &cellToLocalIjk);
+  // R_RegisterCCallable("h3lib", "_geoToFaceIjk",               (DL_FUNC) &_geoToFaceIjk);
+  // R_RegisterCCallable("h3lib", "_hex2dToCoordIJK",            (DL_FUNC) &_hex2dToCoordIJK);
+  // R_RegisterCCallable("h3lib", "_faceIjkToGeo",               (DL_FUNC) &_faceIjkToGeo);
+  // R_RegisterCCallable("h3lib", "_geoToHex2d",                 (DL_FUNC) &_geoToHex2d);
+  // R_RegisterCCallable("h3lib", "_h3ToFaceIjk",                (DL_FUNC) &_h3ToFaceIjk);
+  // R_RegisterCCallable("h3lib", "_faceIjkToH3",                (DL_FUNC) &_faceIjkToH3);
+  // R_RegisterCCallable("h3lib", "cellToLocalIjk",              (DL_FUNC) &cellToLocalIjk);
   R_RegisterCCallable("h3lib", "_geoToClosestFace",           (DL_FUNC) &_geoToClosestFace);
-  R_RegisterCCallable("h3lib", "_ijkToHex2d",                 (DL_FUNC) &_ijkToHex2d);
+  // R_RegisterCCallable("h3lib", "_ijkToHex2d",                 (DL_FUNC) &_ijkToHex2d);
 
 
   R_forceSymbols(info, TRUE);  // controls visibility