diff --git a/include/picrin/read.h b/include/picrin/read.h
index 8b977d58..c77398e3 100644
--- a/include/picrin/read.h
+++ b/include/picrin/read.h
@@ -29,7 +29,7 @@ void pic_init_reader(pic_state *);
 
 void pic_define_reader(pic_state *, const char *, pic_func_t);
 
-struct pic_trie *pic_trie_new(pic_state *);
+struct pic_trie *pic_make_trie(pic_state *);
 void pic_trie_delete(pic_state *, struct pic_trie *);
 
 #if defined(__cplusplus)
diff --git a/read.c b/read.c
index 48ca7498..1d9a4a74 100644
--- a/read.c
+++ b/read.c
@@ -751,7 +751,7 @@ read(pic_state *pic, struct pic_port *port, int c)
 }
 
 struct pic_trie *
-pic_trie_new(pic_state *pic)
+pic_make_trie(pic_state *pic)
 {
   struct pic_trie *trie;
 
@@ -784,7 +784,7 @@ pic_define_reader(pic_state *pic, const char *str, pic_func_t reader)
 
   while ((c = *str++)) {
     if (trie->table[c] == NULL) {
-      trie->table[c] = pic_trie_new(pic);
+      trie->table[c] = pic_make_trie(pic);
     }
     trie = trie->table[c];
   }
diff --git a/state.c b/state.c
index d0c05e4e..d98ee2f2 100644
--- a/state.c
+++ b/state.c
@@ -67,7 +67,7 @@ pic_open(int argc, char *argv[], char **envp)
   /* reader */
   pic->reader = malloc(sizeof(struct pic_reader));
   pic->reader->typecase = PIC_CASE_DEFAULT;
-  pic->reader->trie = pic_trie_new(pic);
+  pic->reader->trie = pic_make_trie(pic);
   xh_init_int(&pic->reader->labels, sizeof(pic_value));
 
   /* error handling */