diff --git a/include/picrin.h b/include/picrin.h
index d194de1f..8522ef5b 100644
--- a/include/picrin.h
+++ b/include/picrin.h
@@ -100,6 +100,8 @@ typedef struct {
   pic_value lib_tbl;
   struct pic_lib *lib;
 
+  xhash rlabels;
+
   jmp_buf *jmp;
   struct pic_error *err;
   struct pic_jmpbuf *try_jmps;
diff --git a/src/state.c b/src/state.c
index a9a13ba8..61cd2f41 100644
--- a/src/state.c
+++ b/src/state.c
@@ -64,6 +64,9 @@ pic_open(int argc, char *argv[], char **envp)
   pic->lib_tbl = pic_nil_value();
   pic->lib = NULL;
 
+  /* reader */
+  xh_init_int(&pic->rlabels, sizeof(pic_value));
+
   /* error handling */
   pic->jmp = NULL;
   pic->err = NULL;
@@ -154,6 +157,7 @@ pic_close(pic_state *pic)
   xh_destroy(&pic->syms);
   xh_destroy(&pic->global_tbl);
   xh_destroy(&pic->macros);
+  xh_destroy(&pic->rlabels);
 
   /* free GC arena */
   free(pic->arena);