1 files changed, 1 insertions, 1 deletions
diff --git a/lex.c.blt b/lex.c.blt
index 1b6c31e964..7bf3a8264f 100644
--- a/lex.c.blt
+++ b/lex.c.blt
@@ -30,7 +30,7 @@ error "gperf generated tables don't work with this execution character set. Plea
 
 #line 1 "keywords"
 
-struct kwtable {char *name; int id[2]; enum lex_state_e state;};
+struct kwtable {const char *name; int id[2]; enum lex_state_e state;};
 const struct kwtable *rb_reserved_word(const char *, unsigned int);
 #ifndef RIPPER
 #line 7 "keywords"