diff --git a/ChangeLog b/ChangeLog
index 61afb4def..64aa007ba 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2018-06-02  Werner Lemberg  <wl@gnu.org>
+
+	* src/autofit/afwarp.h: Use AF_CONFIG_OPTION_USE_WARPER (#54033).
+
 2018-05-31  Werner Lemberg  <wl@gnu.org>
 
 	* src/raster/ftraster.c (black_TWorker_): Remove `gTarget' field.
diff --git a/src/autofit/afwarp.h b/src/autofit/afwarp.h
index 520b1be90..38b747948 100644
--- a/src/autofit/afwarp.h
+++ b/src/autofit/afwarp.h
@@ -47,12 +47,14 @@ FT_BEGIN_HEADER
   } AF_WarperRec, *AF_Warper;
 
 
+#ifdef AF_CONFIG_OPTION_USE_WARPER
   FT_LOCAL( void )
   af_warper_compute( AF_Warper      warper,
                      AF_GlyphHints  hints,
                      AF_Dimension   dim,
                      FT_Fixed      *a_scale,
                      FT_Fixed      *a_delta );
+#endif
 
 
 FT_END_HEADER