diff --git a/ChangeLog b/ChangeLog
index 917aa837b..4f4e2812a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2018-06-03  Armin Hasitzka  <prince.cherusker@gmail.com>
+
+	* src/smooth/ftgrays.c (gray_convert_glyph): Remove unused variables.
+
 2018-06-03  Werner Lemberg  <wl@gnu.org>
 
 	* src/tools/glnames.py (main): Emit header in `light' comment style.
diff --git a/src/smooth/ftgrays.c b/src/smooth/ftgrays.c
index 1ecb4994f..10fdddf76 100644
--- a/src/smooth/ftgrays.c
+++ b/src/smooth/ftgrays.c
@@ -1739,8 +1739,6 @@ typedef ptrdiff_t  FT_PtrDist;
   {
     const TCoord  yMin = ras.min_ey;
     const TCoord  yMax = ras.max_ey;
-    const TCoord  xMin = ras.min_ex;
-    const TCoord  xMax = ras.max_ex;
 
     TCell    buffer[FT_MAX_GRAY_POOL];
     size_t   height = (size_t)( yMax - yMin );