diff --git a/ChangeLog b/ChangeLog
index 1e5eee668..a2afd1598 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2017-03-27  Werner Lemberg  <wl@gnu.org>
+
+	[cid, truetype] Don't use `index' as a variable name.
+
+	At least on FreeBSD there is a global declaration of `index' in file
+	`/usr/include/strings.h'.
+
+	* src/cff/cf2intrp.c, src/truetype/ttgload.c: s/index/idx/ where
+	appropriate.
+
 2017-03-27  Wojciech Mamrak  <wmamrak@gmail.com>
 
 	[sfnt] Minor improvement for handling kern tables.
diff --git a/src/truetype/ttgload.c b/src/truetype/ttgload.c
index 9cdcf1012..35b62d0eb 100644
--- a/src/truetype/ttgload.c
+++ b/src/truetype/ttgload.c
@@ -1394,7 +1394,7 @@
   /* a utility function to retrieve i-th node from given FT_List */
   static FT_ListNode
   ft_list_get_node_at( FT_List  list,
-                       FT_UInt  index )
+                       FT_UInt  idx )
   {
     FT_ListNode  cur;
 
@@ -1404,10 +1404,10 @@
 
     for ( cur = list->head; cur; cur = cur->next )
     {
-      if ( !index )
+      if ( !idx )
         return cur;
 
-      index--;
+      idx--;
     }
 
     return NULL;