diff --git a/ChangeLog b/ChangeLog
index 7aa3815..78d99e1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2019-06-11  Alexei Podtelezhnikov  <apodtele@gmail.com>
+
+	* src/truetype/ttobjs.c (tt_check_trickyness_family): Add `const'.
+
 2019-06-11  Moazin Khatti  <moazinkhatri@gmail.com>
 
 	[gzip] Add support for `gzip' encoded header.
diff --git a/src/truetype/ttobjs.c b/src/truetype/ttobjs.c
index 461d49f..e4775a5 100644
--- a/src/truetype/ttobjs.c
+++ b/src/truetype/ttobjs.c
@@ -148,7 +148,7 @@
   /* This list shall be expanded as we find more of them.       */
 
   static FT_Bool
-  tt_check_trickyness_family( FT_String*  name )
+  tt_check_trickyness_family( const FT_String*  name )
   {
 
 #define TRICK_NAMES_MAX_CHARACTERS  19