diff --git a/src/Makefile.sources b/src/Makefile.sources
index 57b7e9d3c..775068efa 100644
--- a/src/Makefile.sources
+++ b/src/Makefile.sources
@@ -8,7 +8,6 @@ HB_BASE_sources = \
 	hb-buffer-private.hh \
 	hb-buffer-serialize.cc \
 	hb-buffer.cc \
-	hb-cache-private.hh \
 	hb-common.cc \
 	hb-face-private.hh \
 	hb-face.cc \
diff --git a/src/hb-cache-private.hh b/src/hb-cache-private.hh
deleted file mode 100644
index 91955b709..000000000
--- a/src/hb-cache-private.hh
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright © 2012  Google, Inc.
- *
- *  This is part of HarfBuzz, a text shaping library.
- *
- * Permission is hereby granted, without written agreement and without
- * license or royalty fees, to use, copy, modify, and distribute this
- * software and its documentation for any purpose, provided that the
- * above copyright notice and the following two paragraphs appear in
- * all copies of this software.
- *
- * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
- * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
- * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
- * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
- * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
- * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
- * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
- *
- * Google Author(s): Behdad Esfahbod
- */
-
-#ifndef HB_CACHE_PRIVATE_HH
-#define HB_CACHE_PRIVATE_HH
-
-#include "hb-private.hh"
-
-
-/* Implements a lock-free cache for int->int functions. */
-
-template <unsigned int key_bits, unsigned int value_bits, unsigned int cache_bits>
-struct hb_cache_t
-{
-  static_assert ((key_bits >= cache_bits), "");
-  static_assert ((key_bits + value_bits - cache_bits < 8 * sizeof (unsigned int)), "");
-
-  inline void clear (void)
-  {
-    memset (values, 255, sizeof (values));
-  }
-
-  inline bool get (unsigned int key, unsigned int *value)
-  {
-    unsigned int k = key & ((1u<<cache_bits)-1);
-    unsigned int v = values[k];
-    if ((v >> value_bits) != (key >> cache_bits))
-      return false;
-    *value = v & ((1u<<value_bits)-1);
-    return true;
-  }
-
-  inline bool set (unsigned int key, unsigned int value)
-  {
-    if (unlikely ((key >> key_bits) || (value >> value_bits)))
-      return false; /* Overflows */
-    unsigned int k = key & ((1u<<cache_bits)-1);
-    unsigned int v = ((key>>cache_bits)<<value_bits) | value;
-    values[k] = v;
-    return true;
-  }
-
-  private:
-  unsigned int values[1u<<cache_bits];
-};
-
-typedef hb_cache_t<21, 16, 8> hb_cmap_cache_t;
-typedef hb_cache_t<16, 24, 8> hb_advance_cache_t;
-
-
-#endif /* HB_CACHE_PRIVATE_HH */
diff --git a/src/hb-ft.cc b/src/hb-ft.cc
index 6036f301a..f578e9dc4 100644
--- a/src/hb-ft.cc
+++ b/src/hb-ft.cc
@@ -33,8 +33,6 @@
 
 #include "hb-font-private.hh"
 
-#include "hb-cache-private.hh" // Maybe use in the future?
-
 #include FT_ADVANCES_H
 #include FT_MULTIPLE_MASTERS_H
 #include FT_TRUETYPE_TABLES_H