diff --git a/contrib/10.callcc/callcc.c b/contrib/10.callcc/callcc.c
index 0afe3d7e..fdd3f6d3 100644
--- a/contrib/10.callcc/callcc.c
+++ b/contrib/10.callcc/callcc.c
@@ -5,7 +5,7 @@
 struct fullcont {
   jmp_buf jmp;
 
-  struct pic_cont *prev_jmp;
+  struct cont *prev_jmp;
 
   struct checkpoint *cp;
 
diff --git a/extlib/benz/cont.c b/extlib/benz/cont.c
index 3ddbf7db..cd1fdafc 100644
--- a/extlib/benz/cont.c
+++ b/extlib/benz/cont.c
@@ -6,7 +6,7 @@
 #include "picrin/private/object.h"
 #include "picrin/private/state.h"
 
-struct pic_cont {
+struct cont {
   PIC_JMPBUF *jmp;
 
   int id;
@@ -20,13 +20,13 @@ struct pic_cont {
   int retc;
   pic_value *retv;
 
-  struct pic_cont *prev;
+  struct cont *prev;
 };
 
-static const pic_data_type cont_type = { "pic_cont", NULL, NULL };
+static const pic_data_type cont_type = { "cont", NULL, NULL };
 
 void
-pic_save_point(pic_state *pic, struct pic_cont *cont, PIC_JMPBUF *jmp)
+pic_save_point(pic_state *pic, struct cont *cont, PIC_JMPBUF *jmp)
 {
   cont->jmp = jmp;
 
@@ -45,7 +45,7 @@ pic_save_point(pic_state *pic, struct pic_cont *cont, PIC_JMPBUF *jmp)
 }
 
 void
-pic_load_point(pic_state *pic, struct pic_cont *cont)
+pic_load_point(pic_state *pic, struct cont *cont)
 {
   pic_wind(pic, pic->cp, cont->cp);
 
@@ -110,7 +110,7 @@ cont_call(pic_state *pic)
   int argc;
   pic_value *argv;
   int id;
-  struct pic_cont *cc, *cont;
+  struct cont *cc, *cont;
 
   pic_get_args(pic, "*", &argc, &argv);
 
@@ -139,22 +139,22 @@ cont_call(pic_state *pic)
 }
 
 pic_value
-pic_make_cont(pic_state *pic, struct pic_cont *cont)
+pic_make_cont(pic_state *pic, struct cont *cont)
 {
   return pic_lambda(pic, cont_call, 1, pic_data_value(pic, cont, &cont_type));
 }
 
-struct pic_cont *
+struct cont *
 pic_alloca_cont(pic_state *pic)
 {
-  return pic_alloca(pic, sizeof(struct pic_cont));
+  return pic_alloca(pic, sizeof(struct cont));
 }
 
 static pic_value
 pic_callcc(pic_state *pic, pic_value proc)
 {
   PIC_JMPBUF jmp;
-  struct pic_cont *cont = pic_alloca_cont(pic);
+  struct cont *cont = pic_alloca_cont(pic);
 
   if (PIC_SETJMP(pic, jmp)) {
     return pic_valuesk(pic, cont->retc, cont->retv);
diff --git a/extlib/benz/error.c b/extlib/benz/error.c
index fea8a857..1e902b0b 100644
--- a/extlib/benz/error.c
+++ b/extlib/benz/error.c
@@ -69,7 +69,7 @@ dynamic_set(pic_state *pic)
 pic_value
 pic_start_try(pic_state *pic, PIC_JMPBUF *jmp)
 {
-  struct pic_cont *cont;
+  struct cont *cont;
   pic_value handler;
   pic_value var, old_val, new_val;
   pic_value in, out;
diff --git a/extlib/benz/include/picrin/private/object.h b/extlib/benz/include/picrin/private/object.h
index 9d157a4f..6abe4d63 100644
--- a/extlib/benz/include/picrin/private/object.h
+++ b/extlib/benz/include/picrin/private/object.h
@@ -188,9 +188,9 @@ void pic_rope_decref(pic_state *, struct rope *);
 #define pic_func_p(pic, proc) (pic_type(pic, proc) == PIC_TYPE_FUNC)
 #define pic_irep_p(pic, proc) (pic_type(pic, proc) == PIC_TYPE_IREP)
 
-struct pic_cont *pic_alloca_cont(pic_state *);
-pic_value pic_make_cont(pic_state *, struct pic_cont *);
-void pic_save_point(pic_state *, struct pic_cont *, PIC_JMPBUF *);
+struct cont *pic_alloca_cont(pic_state *);
+pic_value pic_make_cont(pic_state *, struct cont *);
+void pic_save_point(pic_state *, struct cont *, PIC_JMPBUF *);
 void pic_exit_point(pic_state *);
 void pic_wind(pic_state *, struct checkpoint *, struct checkpoint *);
 pic_value pic_dynamic_wind(pic_state *, pic_value in, pic_value thunk, pic_value out);
diff --git a/extlib/benz/include/picrin/private/state.h b/extlib/benz/include/picrin/private/state.h
index 92f26679..16e5ccb2 100644
--- a/extlib/benz/include/picrin/private/state.h
+++ b/extlib/benz/include/picrin/private/state.h
@@ -40,7 +40,7 @@ struct pic_state {
   void *userdata;
 
   struct checkpoint *cp;
-  struct pic_cont *cc;
+  struct cont *cc;
   int ccnt;
 
   pic_value *sp;